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Chen F, Chen Y, Chang XY, He D, Yang Q, Wang DZ, Xu C, Yu P, Xing X. Polarizability matters in enantio-selection. Nat Commun 2024; 15:3394. [PMID: 38649371 PMCID: PMC11035643 DOI: 10.1038/s41467-024-47813-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/05/2023] [Accepted: 03/22/2024] [Indexed: 04/25/2024] Open
Abstract
The prevalence of chirality, or, handedness in biological world is a fundamental phenomenon and a characteristic hallmark of life. Thus, understanding the origin of enantio-selection, i.e., the sense and magnitude of asymmetric induction, has been a long-pursued goal in asymmetric catalysis. Herein, we demonstrated a polarizability-derived electronic effect that was shown to be capable of rationalizing a broad range of stereochemical observations made in the field of asymmetric catalysis. This effect provided a consistent enantio-control model for the prediction of major enantiomers formed in a ruthenium-catalyzed asymmetric transfer hydrogenations of ketones. Direct and quantitative linear free energy relationships between substrates' local polarizabilities and observed enantio-selectivity were also revealed in three widely known asymmetric catalytic systems covering both reductions and oxidations. This broadly applicable polarizability-based electronic effect, in conjunction with conventional wisdom mainly leveraging on steric effect considerations, should aid rational design of enantio-selective processes for better production of chiral substances.
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Affiliation(s)
- Fumin Chen
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin, 150001, China
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Yu Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Xiao-Yong Chang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Dongxu He
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Qingjing Yang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China
| | | | - Chen Xu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Xiangyou Xing
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, China.
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2
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Su W, Zhu J, Chen Y, Zhang X, Qiu W, Yang K, Yu P, Song Q. Copper-catalysed asymmetric hydroboration of alkenes with 1,2-benzazaborines to access chiral naphthalene isosteres. Nat Chem 2024:10.1038/s41557-024-01505-0. [PMID: 38589627 DOI: 10.1038/s41557-024-01505-0] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2023] [Accepted: 03/08/2024] [Indexed: 04/10/2024]
Abstract
Bioisosteric replacement has emerged as a clear strategy for drug-structure optimization. Naphthalene is the core element of many chiral pharmaceuticals and drug candidates. However, as a promising isostere of naphthalene, the chiral version of 1,2-benzazaborine has rarely been explored due to the lack of efficient synthetic methods. Here we describe a copper-catalysed enantioselective hydroboration of alkenes with 1,2-benzazaborines. The method provides a general platform for the atom-economic and efficient construction of diverse chiral 1,2-benzazaborine compounds (more than 60 examples) that bear a 2-carbon-stereogenic centre or allene skeleton in high yields and excellent enantioselectivities. Three 1,2-benzazaborine analogues of bioactive chiral naphthalene-containing molecules have been prepared, and a series of transformations around chiral 1,2-benzazaborines have also been developed. Notably, the hydroboration process of this study reveals that the identity of 1,2-benzazaborine plays an essential role in the rate-determining step and catalyst resting state.
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Grants
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 2227104 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 21931013, 22001038, 22271105, 22271048 National Natural Science Foundation of China (National Science Foundation of China)
- 2022J02009, 2022J05016 Natural Science Foundation of Fujian Province (Fujian Provincial Natural Science Foundation)
- KQTD20210811090112004 Shenzhen Science and Technology Innovation Commission
- KQTD20210811090112004 Shenzhen Science and Technology Innovation Commission
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Affiliation(s)
- Wanlan Su
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Jide Zhu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Yu Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China
| | - Xu Zhang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Weihua Qiu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China
| | - Kai Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China.
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, China.
| | - Qiuling Song
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, China.
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3
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Du XY, Fang JH, Chen JJ, Shen B, Liu WL, Zhang JY, Ye XM, Yang NY, Gu QS, Li ZL, Yu P, Liu XY. Copper-Catalyzed Enantioconvergent Radical N-Alkylation of Diverse (Hetero)aromatic Amines. J Am Chem Soc 2024; 146:9444-9454. [PMID: 38513075 DOI: 10.1021/jacs.4c02141] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/23/2024]
Abstract
The 3d transition metal-catalyzed enantioconvergent radical cross-coupling provides a powerful tool for chiral molecule synthesis. In the classic mechanism, the bond formation relies on the interaction between nucleophile-sequestered metal complexes and radicals, limiting the nucleophile scope to sterically uncongested ones. The coupling of sterically congested nucleophiles poses a significant challenge due to difficulties in transmetalation, restricting the reaction generality. Here, we describe a probable outer-sphere nucleophilic attack mechanism that circumvents the challenging transmetalation associated with sterically congested nucleophiles. This strategy enables a general copper-catalyzed enantioconvergent radical N-alkylation of aromatic amines with secondary/tertiary alkyl halides and exhibits catalyst-controlled stereoselectivity. It accommodates diverse aromatic amines, especially bulky secondary and primary ones to deliver value-added chiral amines (>110 examples). It is expected to inspire the coupling of more nucleophiles, particularly challenging sterically congested ones, and accelerate reaction generality.
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Affiliation(s)
- Xuan-Yi Du
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jia-Heng Fang
- School of Chemistry and Chemical Engineering, Harbin Institute of Technology, Harbin 150001, China
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ji-Jun Chen
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Boming Shen
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wei-Long Liu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jia-Yong Zhang
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xue-Man Ye
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ning-Yuan Yang
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qiang-Shuai Gu
- Academy for Advanced Interdisciplinary Studies and Department of Chemistry, Southern University of Science and Technology, Shenzhen 518055, China
| | - Zhong-Liang Li
- Dongguan Key Laboratory of Interdisciplinary Science for Advanced Materials and Large-Scale Scientific Facilities, School of Physical Sciences, Great Bay University, Dongguan 523000, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xin-Yuan Liu
- Shenzhen Grubbs Institute, Department of Chemistry, and Guangming Advanced Research Institute, Southern University of Science and Technology, Shenzhen 518055, China
- Shenzhen Key Laboratory of Cross-Coupling Reactions, Southern University of Science and Technology, Shenzhen 518055, China
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4
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Chen YH, Duan M, Lin SL, Liu YW, Cheng JK, Xiang SH, Yu P, Houk KN, Tan B. Organocatalytic aromatization-promoted umpolung reaction of imines. Nat Chem 2024; 16:408-416. [PMID: 38062248 DOI: 10.1038/s41557-023-01384-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 10/24/2023] [Indexed: 03/07/2024]
Abstract
The umpolung functionalization of imines bears vast synthetic potential, but polarity inversion is less efficient compared with the carbonyl counterparts. Strong nucleophiles are often required to react with the N-electrophiles without catalytic and stereochemical control. Here we show an effective strategy to realize umpolung of imines promoted by organocatalytic aromatization. The attachment of strongly electron-withdrawing groups to imines could enhance the umpolung reactivity by both electronegativity and aromatic character, enabling the direct amination of (hetero)arenes with good efficiencies and stereoselectivities. Additionally, the application of chiral Brønsted acid catalyst furnishes (hetero)aryl C-N atropisomers or enantioenriched aliphatic amines via dearomative amination from N-electrophilic aromatic precursors. Control experiments and density functional theory calculations suggest an ionic mechanism for the umpolung reaction of imines. This disconnection expands the options to forge C-N bonds stereoselectively on (hetero)arenes, which represents an important synthetic pursuit, especially in medicinal chemistry.
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Affiliation(s)
- Ye-Hui Chen
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Meng Duan
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA
| | - Si-Li Lin
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Yu-Wei Liu
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Jun Kee Cheng
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Shao-Hua Xiang
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Kendall N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, CA, USA.
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry, Southern University of Science and Technology, Shenzhen, China.
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5
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Chen J, Woods BD, Yu P, Hocevar M, Car D, Plissard SR, Bakkers EPAM, Stanescu TD, Frolov SM. Erratum: Ubiquitous Non-Majorana Zero-Bias Conductance Peaks in Nanowire Devices [Phys. Rev. Lett. 123, 107703 (2019)]. Phys Rev Lett 2024; 132:099901. [PMID: 38489658 DOI: 10.1103/physrevlett.132.099901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Indexed: 03/17/2024]
Abstract
This corrects the article DOI: 10.1103/PhysRevLett.123.107703.
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6
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Lv X, Liu C, Chen Y, Wang D, Yu P, Jin MY, Xu C. Highly Enantioselective Dihydroxylation of 1,1-Disubstituted Aliphatic Alkenes Enabled by Orchestrated Noncovalent π-Interactions. Org Lett 2024; 26:1399-1404. [PMID: 38345406 DOI: 10.1021/acs.orglett.3c04188] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/24/2024]
Abstract
The elusive nature of noncovalent π-interactions leads to their infrequent use as a design element in challenging chemical reactions. Stereocontrolling models based on coordinated noncovalent π-interactions were used for the asymmetric dihydroxylation of 1,1-disubstituted aliphatic alkenes. By introduction of a substituted phthalazine ring into the alkene substrates, the enantioselectivity reached 99% under the catalysis of bis-cinchona alkaloid ligands. Density functional theory calculations indicated a well-orchestrated, π-π interaction-directed "sandwich-like" transition state.
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Affiliation(s)
- Xinrou Lv
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chao Liu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yu Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Donghao Wang
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ming Yu Jin
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Chen Xu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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7
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Du T, Shen B, Dai J, Zhang M, Chen X, Yu P, Liu Y. Controlled and Regioselective Ring-Opening Polymerization for Poly(disulfide)s by Anion-Binding Catalysis. J Am Chem Soc 2023; 145:27788-27799. [PMID: 37987648 DOI: 10.1021/jacs.3c10708] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2023]
Abstract
Poly(disulfide)s are an emerging class of sulfur-containing polymers with applications in medicine, energy, and functional materials. However, the constituent dynamic covalent S-S bond is highly reactive in the presence of the sulfide (RS-) anion, imposing a persistent challenge to control the polymerization. Here, we report an anion-binding approach to arrest the high reactivity of the RS- chain end to control the synthesis of linear poly(disulfide)s, realizing a rapid, living ring-opening polymerization of 1,2-dithiolanes with narrow dispersity and high regioselectivity (Mw/Mn ∼ 1.1, Ps ∼ 0.85). Mechanistic studies support the formation of a thiourea-base-sulfide ternary complex as the catalytically active species during the chain propagation. Theoretical analyses reveal a synergistic catalytic model where the catalyst preorganizes the protonated base and anionic chain end to establish spatial confinement over the bound monomer, effecting the observed regioselectivity. The catalytic system is amenable to monomers with various functional groups, and semicrystalline polymers are also obtained from lipoic acid derivatives by enhancing the regioselectivity.
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Affiliation(s)
- Tianyi Du
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Boming Shen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jieyu Dai
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Miaomiao Zhang
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Xingjian Chen
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yun Liu
- Beijing National Laboratory for Molecular Sciences, Center for Soft Matter Science and Engineering, Key Laboratory of Polymer Chemistry and Physics of Ministry of Education, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China
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8
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Yu P, Huang L, Li Q. [Investigating ocular parameters for predicting anomalous vault among phakic intraocular lens patients]. Zhonghua Yan Ke Za Zhi 2023; 59:1003-1011. [PMID: 38061901 DOI: 10.3760/cma.j.cn112142-20231024-00167] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/18/2023]
Abstract
Objective: To analyze the relationships between preoperative ocular parameters and postoperative anomalous vaults, and research their predictive diagnostic value. Methods: In this retrospective case series study, 664 eyes from 332 patients underwent posterior chamber phakic intraocular lens (pIOL) implantation at Shanghai Bright Eye Hospital and Wuxi Huaxia Eye Hospital from November 2020 to November 2021. Preoperative ocular parameters, including spherical equivalent, intraocular pressure, horizontal/vertical ciliary sulcus diameters (HCS/VCS), white-to-white diameters (WTW), corneal steep/flat curvature, central corneal thickness, anterior chamber depth (ACD), lens thickness (LT), and axial length were collected. The pIOL vaults were measured 3 months after surgery. Patients were categorized into low vault group, optimal vault group, and high vault group based on whether the vault fell within the ideal range (250 to 750 μm). Using the optimal vault group as a benchmark, receiver operating characteristic (ROC) curves were drawn for each ocular parameter of the low and high vault groups to analyze diagnostic efficiency and cut-off values for abnormal vaults after pIOL operation. Each ocular parameter was used as an independent variable to establish a multivariate logistic regression model for two different vault anomalies. ROC curves were drawn and analyzed again based on the regression results. Results: Statistically significant differences were observed in WTW, HCS-WTW, ACD, and LT among the three groups. Comparisons between each pair of groups indicated that WTW in the high vault group significantly differed from the other two groups (P<0.05), HCS-WTW in the low vault group significantly differed from the other groups (P<0.05), and ACD and LT explained statistical differences among the three groups (P<0.05), while other parameters showed no differences. ROC curves illustrated that independent ocular parameters such as LT, HCS-WTW, and ACD had clinical predictive diagnostic significance for low vault abnormalities. The area under the curve (AUC), sensitivity, and specificity for these parameters were 0.829(0.952, 0.561), 0.745(0.857, 0.644), and 0.730(0.619, 0.853), respectively. The diagnostic cut-off values were 3.745, 0.020, and 2.975 mm, respectively. The clinical predictive significance of independent ocular parameters in diagnosing the high vault group was poor (AUC<0.7). The predictive Logistic model equation for low vault was Logistic(V1)=-10.067+5.328·HCS-3.620·WTW+6.263·LT, and the predictive model for high vault was Logistic(V2)=6.232+1.323·WTW-3.358·LT. The new parameters in the predictive equation significantly improved the diagnostic efficiency of low and high vault abnormalities, reaching 0.884(0.810, 0.824) and 0.736(0.810, 0.554), respectively. Conclusions: Preoperative predictive diagnostic parameters for postoperative low vault group included LT, HCS-WTW, and ACD, while the high vault group had no independent predictive diagnostic parameters. Logistic regression improved the predictive diagnostic efficiency of abnormal vaults.
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Affiliation(s)
- P Yu
- Wuxi Huaxia Eye Hospital, Wuxi 214002, China
| | - L Huang
- Wuxi Huaxia Eye Hospital, Wuxi 214002, China
| | - Q Li
- Shanghai Bright Eye Hospital, Shanghai 200050, China
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9
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Wen CJ, Wang MH, Yu P, Zhou Q. [Advances in clinical significance and detection methods research of high density lipoprotein subfractions]. Zhonghua Yu Fang Yi Xue Za Zhi 2023; 57:1901-1907. [PMID: 38008584 DOI: 10.3760/cma.j.cn112150-20230220-00134] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 11/28/2023]
Abstract
High density lipoprotein (HDL) is an important biochemical index of clinical cardiovascular disease. Many new studies have demonstrated abnormalities of plasma HDL subfractions in patients with this disease,and their clinical significance is greater than the overall abnormalities of HDL. Therefore,the HDL subfraction as an important factor in cardiovascular disease has attracted extensive research and attention. This article summarizes current research on HDL subfractions,their measurements and their relationships with atherosclerosis and coronary artery disease.
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Affiliation(s)
- C J Wen
- Jinyu School of Laboratory Medicine,Guangzhou Medical University, Guangzhou 510260,China
| | - M H Wang
- Laboratory Department, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260,China
| | - P Yu
- Laboratory Department, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260,China
| | - Q Zhou
- Laboratory Department, the Second Affiliated Hospital of Guangzhou Medical University, Guangzhou 510260,China
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10
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Wang L, Zheng W, Zhong L, Yang Y, Chen Y, Hou Q, Yu P, Jiang X. Phenylboronic Acid-Modified Gold Nanoclusters as a Nanoantibiotic to Treat Vancomycin-Resistant Enterococcus faecalis-Caused Infections. ACS Nano 2023; 17:19685-19695. [PMID: 37815027 DOI: 10.1021/acsnano.3c02886] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/11/2023]
Abstract
Vancomycin is one of the last lines of defense against certain drug-resistant bacteria-caused infections. However, the high susceptibility to drug resistance and high toxicity seriously limit the application of vancomycin. Nanoantibiotics provide opportunities to solve these problems. Herein, we present mercaptophenylboronic acid (MBA)-modified gold nanoclusters with well-defined molecular formulas and structure (Au44(MBA)18) and excellent antibacterial activities against various drug-resistant bacteria such as vancomycin-resistant Enterococcus faecalis (VRE). Au44(MBA)18 interacts with bacteria by first attaching to teichoic-acid and destroying the cell wall and subsequently binding to the bacterial DNA. Au44(MBA)18 could be administered via multiple routes and has a high biosafety (500 mg/kg, no ototoxicity), overcoming the two major shortcomings of vancomycin (sole administration route and high ototoxicity). Our study is insightful for curing infections caused by multidrug-resistant bacteria using nanoantibiotics with high biosafety.
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Affiliation(s)
- Le Wang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
- Cancer Research Center, Jiangxi University of Chinese Medicine, No. 1688 Meiling Avenue, Xinjian District, Nanchang, Jiangxi 330004, People's Republic of China
| | - Wenfu Zheng
- GBA Research Innovation Institute for Nanotechnology, CAS Key Lab for Biological Effects of Nanomaterials and Nanosafety, National Center for NanoScience and Technology, No. 11 Zhongguancun Beiyitiao, Haidian District, Beijing, 100190, People's Republic of China
| | - Leni Zhong
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
| | - Yingkun Yang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
- Division of Life Science, Hong Kong University of Science and Technology, Clear Water Bay, Kowloon, Hong Kong 999077, People's Republic of China
| | - Yao Chen
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
| | - Qinghong Hou
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
| | - Peiyuan Yu
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
| | - Xingyu Jiang
- Shenzhen Key Laboratory of Smart Healthcare Engineering, Guangdong Provincial Key Laboratory of Advanced Biomaterials, Department of Biomedical Engineering, Southern University of Science and Technology, No. 1088 Xueyuan Road, Nanshan District, Shenzhen, Guangdong 518055, People's Republic of China
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11
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Wu M, Chen YW, Lu Q, Wang YB, Cheng JK, Yu P, Tan B. Organocatalytic Si-C Aryl Bond Functionalization-Enabled Atroposelective Synthesis of Axially Chiral Biaryl Siloxanes. J Am Chem Soc 2023; 145:20646-20654. [PMID: 37695885 DOI: 10.1021/jacs.3c07839] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 09/13/2023]
Abstract
Chiral organosilanes are valuable chemical entities in the development of functional organic materials, asymmetric catalysis, and medicinal chemistry. As an important strategy for constructing chiral organosilanes, the asymmetric functionalization of the Si-CAryl bond typically relies on transition-metal catalysis. Herein, we present an efficient method for atroposelective synthesis of biaryl siloxane atropisomers via organocatalytic Si-C bond functionalization of dinaphthosiloles with silanol nucleophiles. The reaction proceeds through an asymmetric protonation and simultaneous Si-C bond cleavage/silanolysis sequence in the presence of a newly developed chiral Brønsted acid catalyst. The versatile nature of the Si-C bond streamlines the derivatization of axially chiral products into other functional atropisomers, thereby expanding the applicability of this method.
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Affiliation(s)
- Ming Wu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yi-Wei Chen
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Qian Lu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yong-Bin Wang
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Jun Kee Cheng
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Bin Tan
- Shenzhen Grubbs Institute, Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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12
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Chen Y, Zuo M, Chen Y, Yu P, Chen X, Zhang X, Yuan W, Wu Y, Zhu W, Zhao Y. Nanocompartment-confined polymerization in living systems. Nat Commun 2023; 14:5229. [PMID: 37634028 PMCID: PMC10460442 DOI: 10.1038/s41467-023-40935-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2023] [Accepted: 08/16/2023] [Indexed: 08/28/2023] Open
Abstract
Polymerization in living systems has become an effective strategy to regulate cell functions and behavior. However, the requirement of high concentrations of monomers, the existence of complicated intracorporal interferences, and the demand for extra external stimulations hinder their further biological applications. Herein, a nanocompartment-confined strategy that provides a confined and secluded environment for monomer enrichment and isolation is developed to achieve high polymerization efficiency, reduce the interference from external environment, and realize broad-spectrum polymerizations in living systems. For exogenous photopolymerization, the light-mediated free-radical polymerization of sodium 4-styrenesulfonate induces a 2.7-fold increase in the reaction rate with the protection of a confined environment. For endogenous hydrogen peroxide-responsive polymerization, p‑aminodiphenylamine hydrochloride embedded in a nanocompartment not only performs a 6.4-fold higher reaction rate than that of free monomers, but also activates an effective second near-infrared photoacoustic imaging-guided photothermal immunotherapy at tumor sites. This nanocompartment-confined strategy breaks the shackles of conventional polymerization, providing a universal platform for in vivo synthesis of polymers with diverse structures and functions.
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Affiliation(s)
- Yun Chen
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Mengxuan Zuo
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yu Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
| | - Xiaokai Chen
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Xiaodong Zhang
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Wei Yuan
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Yinglong Wu
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Wei Zhu
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China.
| | - Yanli Zhao
- School of Chemistry, Chemical Engineering and Biotechnology, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore.
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13
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Yang K, Mao Y, Zhang Z, Xu J, Wang H, He Y, Yu P, Song Q. Construction of C-B axial chirality via dynamic kinetic asymmetric cross-coupling mediated by tetracoordinate boron. Nat Commun 2023; 14:4438. [PMID: 37488114 PMCID: PMC10366327 DOI: 10.1038/s41467-023-40164-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2022] [Accepted: 07/14/2023] [Indexed: 07/26/2023] Open
Abstract
Catalytic dynamic kinetic asymmetric transformation (DyKAT) provides a powerful tool to access chiral stereoisomers from racemic substrates. Such transformation has been widely employed on the construction of central chirality, however, the application in axial chirality remains underexplored because its equilibrium of substrate enantiomers is limited to five-membered metalacyclic intermediate. Here we report a tetracoordinate boron-directed dynamic kinetic asymmetric cross-coupling of racemic, configurationally stable 3-bromo-2,1-azaborines with boronic acid derivatives. A series of challenging C-B axially chiral compounds were prepared with generally good to excellent enantioselectivities. Moreover, this transformation can also be extended to prepare atropisomers bearing adjacent C-B and C-C diaxes with excellent diastereo- and enantio-control. The key to the success relies on the rational design of a reversible tetracoordinate boron intermediate, which is supported by theoretical calculations that dramatically reduces the rotational barrier of the original C-B axis and achieves the goal of DyKAT.
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Affiliation(s)
- Kai Yang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Yanfei Mao
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Zhihan Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Jie Xu
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Hao Wang
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Yong He
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China.
| | - Qiuling Song
- Key Laboratory of Molecule Synthesis and Function Discovery, Fujian Province University, College of Chemistry at Fuzhou University, Fuzhou, Fujian, 350108, China.
- School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China.
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14
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Liu M, Shen B, Liu C, Yu P, Li P. Organocatalytic Enantioselective 1,8-Addition for the Synthesis of Chiral Tetraarylmethanes from 2-Naphthol/Naphthalen-2-amine-Based Tertiary Alcohols. J Am Chem Soc 2023. [PMID: 37344408 DOI: 10.1021/jacs.3c05107] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/23/2023]
Abstract
Catalytic enantioselective construction of optically active tetraarylmethanes remains a challenging issue in the field of asymmetric synthesis because of the overwhelming steric hindrance and formidable stereocontrol that existed in construction of the all-aryl-substituted quaternary carbon stereocenter. Here, we reported an organocatalytic asymmetric synthesis of chiral tetraarylmethanes from racemic tertiary alcohols. With the aid of a chiral phosphoric acid catalyst, 6-methylenenaphthalen-2(6H)-ones were generated in situ from 6-(hydroxydiarylmethyl)naphthalen-2-ols, followed by stereoselective 1,8-conjugate addition to afford the corresponding tetraarylmethanes in high to excellent yields with high enantioselectivities. Furthermore, the scope of tertiary alcohols has been successfully enlarged to 6-(hydroxydiphenylmethyl)naphthalen-2-amines. Notably, it is the first time to use 2-naphthol/naphthalen-2-amine unit as the auxiliary group to in situ generate α,β,γ,δ,ε,ζ-conjugate systems, which have been successfully involved in organocatalytic remote stereocontrolled 1,8-conjugate addition reactions. Particularly, organocatalytic stereoconvergent formal nucleophilic substitution reaction of triarylmethanols has been achieved for the asymmetric construction of chiral tetraarylmethanes. In addition, DFT calculations have been applied to provide guidance for the design of additional tertiary alcohols and understand the origin of stereoselectivity.
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Affiliation(s)
- Meiwen Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Boming Shen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Chang Liu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
| | - Pengfei Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen, Guangdong, 518055, China
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15
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Li Z, Xie BC, Lyu PJ, Wang HX, Li Y, Wang CH, Li X, Ye SW, Li G, Pang PF, Zhang YY, Yu P. [Clinical value of nomogram model in evaluating the prognosis of cholangiocarcinoma after interventional therapy]. Zhonghua Yi Xue Za Zhi 2023; 103:1217-1224. [PMID: 37087405 DOI: 10.3760/cma.j.cn112137-20221124-02483] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Subscribe] [Scholar Register] [Indexed: 04/24/2023]
Abstract
Objective: To investigate the clinical value and efficacy of the nomogram model in evaluating the prognosis of cholangiocarcinoma after interventional therapy. Methods: The clinical data of 259 patients with cholangiocarcinoma who received interventional therapy at the First Affiliated Hospital of zhengzhou University from January 2014 to June 2021 were retrospectively analyzed, including 148 males and 111 females, aged from 26 to 91 (65±12) years. They were randomly divided into a training group (181 cases) and a validation group (78 cases) in a ratio of 7∶3. Cox regression analysis was performed in the training group, independent risk factors affecting the prognosis of patients were screened, and a nomogram for 6-month, 1-year, and 2-year survival was constructed. The performance of the nomogram was analyzed by calculating the area under the receiver operating characteristic curve (AUC) value, calibration curve, and decision curve, and the predictive efficacy of the model was evaluated in the validation group. Results: There was no significant difference in baseline data between the training group and the validation group, which was comparable. Regression analysis showed that T stage (T2: HR=0.147,95%CI: 0.077-0.281;T3: HR=0.207,95%CI: 0.122-0.351;T4: HR=0.864,95%CI: 0.537-1.393), tumor diameter (17-33 mm: HR=0.201,95%CI: 0.119-0.341;≥33 mm: HR=0.795,95%CI: 0.521-1.211) and differentiation degree(middle differentiation: HR=3.318,95%CI: 2.082-5.289;highly differentiation: HR=1.842,95%CI: 1.184-2.867) were risk factors affecting the prognosis of interventional therapy for cholangiocarcinoma. The AUC values of the survival curve prediction models were generally consistent between the training and validation groups, and the AUC values of the training group at 6 months, 1 year, and 2 years were 0.925 (95%CI: 0.888-0.963), 0.921 (95%CI: 0.877-0.964) and 0.974 (95%CI: 0.957-0.993), respectively. In the validation group, the 6-month, 1-year, and 2-year AUC values were 0.951 (95%CI: 0.911-0.991), 0.917 (95%CI: 0.857-0.977) and 0.848 (95%CI: 0.737-0.959), respectively, and the AUC values were all greater than 0.8, suggesting that the nomogram had better discrimination ability. The calibration curves of the prediction models of the two groups were basically consistent, and the shape of the calibration curves at 6 months and 1 year fitted the ideal curve, while the fitting degree of the calibration curves at 2 years was relatively poor. The decision curve showed the high clinical utility of this nomogram in predicting the 6-month, 1-year survival of patients with cholangiocarcinoma. Conclusions: T stage, tumor diameter, and differentiation are independent risk factors affecting the prognosis of patients with interventional cholangiocarcinoma, and the nomogram model proposed in this study has good distinguishing ability and exact clinical value for prognosis evaluation.
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Affiliation(s)
- Z Li
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
| | - B C Xie
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
| | - P J Lyu
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - H X Wang
- Department of Radiology, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - Y Li
- Department of Cardiology, the Second Affiliated Hospital of Zhengzhou University, Zhengzhou 450014, China
| | - C H Wang
- Department of Magnetic Resonance, the First Affiliated Hospital of Zhengzhou University, Zhengzhou 450052, China
| | - X Li
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
| | - S W Ye
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
| | - G Li
- Department of Interventional Radiology, Zhengzhou First People's Hospital, Zhengzhou 450004, China
| | - P F Pang
- Department of Interventional Radiology, the Fifth Affiliated Hospital of Sun Yat-sen University, Zhuhai 519000, China
| | - Y Y Zhang
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
| | - P Yu
- Department of Interventional Radiology, the First Affiliated Hospital of Zhengzhou University;Engineering Technology Research Center for Minimally Invasive Interventional Tumors of Henan Province,Zhengzhou 450052, China
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16
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Zhou BW, Zhang J, Ye XB, Liu GX, Xu X, Wang J, Liu ZH, Zhou L, Liao ZY, Yao HB, Xu S, Shi JJ, Shen X, Yu XH, Hu ZW, Lin HJ, Chen CT, Qiu XG, Dong C, Zhang JX, Yu RC, Yu P, Jin KJ, Meng QB, Long YW. Octahedral Distortion and Displacement-Type Ferroelectricity with Switchable Photovoltaic Effect in a 3d^{3}-Electron Perovskite System. Phys Rev Lett 2023; 130:146101. [PMID: 37084444 DOI: 10.1103/physrevlett.130.146101] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 12/02/2022] [Accepted: 03/14/2023] [Indexed: 05/03/2023]
Abstract
Because of the half-filled t_{2g}-electron configuration, the BO_{6} octahedral distortion in a 3d^{3} perovskite system is usually very limited. In this Letter, a perovskitelike oxide Hg_{0.75}Pb_{0.25}MnO_{3} (HPMO) with a 3d^{3} Mn^{4+} state was synthesized by using high pressure and high temperature methods. This compound exhibits an unusually large octahedral distortion enhanced by approximately 2 orders of magnitude compared with that observed in other 3d^{3} perovskite systems like RCr^{3+}O_{3} (R=rare earth). Essentially different from centrosymmetric HgMnO_{3} and PbMnO_{3}, the A-site doped HPMO presents a polar crystal structure with the space group Ama2 and a substantial spontaneous electric polarization (26.5 μC/cm^{2} in theory) arising from the off-center displacements of A- and B-site ions. More interestingly, a prominent net photocurrent and switchable photovoltaic effect with a sustainable photoresponse were observed in the current polycrystalline HPMO. This Letter provides an exceptional d^{3} material system which shows unusually large octahedral distortion and displacement-type ferroelectricity violating the "d^{0}-ness" rule.
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Affiliation(s)
- B W Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J Zhang
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X B Ye
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - G X Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J Wang
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - Z H Liu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - L Zhou
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - Z Y Liao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - H B Yao
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - S Xu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J J Shi
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - X Shen
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
| | - X H Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Z W Hu
- Max Planck Institute for Chemical Physics of Solids, Dresden 01187, Germany
| | - H J Lin
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - C T Chen
- National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan
| | - X G Qiu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - C Dong
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - J X Zhang
- Department of Physics, Beijing Normal University, Beijing 100875, China
| | - R C Yu
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - P Yu
- State Key Laboratory of Low Dimensional Quantum Physics and Department of Physics, Tsinghua University, Beijing, 100084, China
| | - K J Jin
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
| | - Q B Meng
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
| | - Y W Long
- Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China
- School of Physics, University of Chinese Academy of Sciences, Beijing 100049, China
- Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808, China
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17
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Zha T, Rui J, Zhang Z, Zhang D, Yang Z, Yu P, Wang Y, Peng F, Shao Z. Direct Catalytic Asymmetric and Regiodivergent N1- and C3- Allenylic Alkylation of Indoles. Angew Chem Int Ed Engl 2023; 62:e202300844. [PMID: 36942762 DOI: 10.1002/anie.202300844] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/17/2023] [Revised: 03/07/2023] [Accepted: 03/20/2023] [Indexed: 03/23/2023]
Abstract
Herein we report a Pd-catalyzed asymmetric allenylic alkylation strategy for the direct functionalization of 1H-indoles by employing P-chiral BIBOP-type ligands. The regioselectivity (N1/C3) of this process can be switched efficiently. Using Cs2CO3 at elevated temperatures in MeCN, N1-alkylated indoles bearing axial chirality with a stereocenter non-adjacent (β) to the nitrogen are produced in good yields with high enantioselectivity and complete N1-regioselectivity regardless of the electronic properties and substitution patterns of diverse indoles. Using K2CO3 at room temperature in DCM, chiral C3-alkylated indoles can be obtained as well. Notably, we introduce a new class of tri-substituted allenylic electrophiles that proceeded through different pathways from di-substituted allenylic electrophiles.
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Affiliation(s)
- Taochun Zha
- Yunnan University, School of Chemical Science and Technology, CHINA
| | - Jiehui Rui
- Yunnan University, School of Chemical Science and Technology, CHINA
| | - Zhihan Zhang
- Southern University of Science and Technology, Chemistry, CHINA
| | - Dongqiang Zhang
- Yunnan University, School of Chemical Science and Technology, CHINA
| | - Zhirong Yang
- Southern University of Science and Technology, chemistry, CHINA
| | - Peiyuan Yu
- Southern University of Science and Technology, Chemistry, CHINA
| | - Yingcheng Wang
- Yunnan University, School of Chemical Science and Technology, CHINA
| | - Fangzhi Peng
- Yunnan University, School of Chemical Science and Technology, CHINA
| | - Zhihui Shao
- Yunnan University, Key Laboratory of Medicinal Chemistry for Natural Resource, Ministry of Educatio, Cuihu North Road, 650091, Kunming, CHINA
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18
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Katich JM, Apel EC, Bourgeois I, Brock CA, Bui TP, Campuzano-Jost P, Commane R, Daube B, Dollner M, Fromm M, Froyd KD, Hills AJ, Hornbrook RS, Jimenez JL, Kupc A, Lamb KD, McKain K, Moore F, Murphy DM, Nault BA, Peischl J, Perring AE, Peterson DA, Ray EA, Rosenlof KH, Ryerson T, Schill GP, Schroder JC, Weinzierl B, Thompson C, Williamson CJ, Wofsy SC, Yu P, Schwarz JP. Pyrocumulonimbus affect average stratospheric aerosol composition. Science 2023; 379:815-820. [PMID: 36821693 DOI: 10.1126/science.add3101] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/25/2023]
Abstract
Pyrocumulonimbus (pyroCb) are wildfire-generated convective clouds that can inject smoke directly into the stratosphere. PyroCb have been tracked for years, yet their apparent rarity and episodic nature lead to highly uncertain climate impacts. In situ measurements of pyroCb smoke reveal its distinctive and exceptionally stable aerosol properties and define the long-term influence of pyroCb activity on the stratospheric aerosol budget. Analysis of 13 years of airborne observations shows that pyroCb are responsible for 10 to 25% of the black carbon and organic aerosols in the "present-day" lower stratosphere, with similar impacts in both the North and South Hemispheres. These results suggest that, should pyroCb increase in frequency and/or magnitude in future climates, they could generate dominant trends in stratospheric aerosol.
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Affiliation(s)
- J M Katich
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - E C Apel
- Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
| | - I Bourgeois
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - C A Brock
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA
| | - T P Bui
- NASA Ames Research Center, Moffett Field, CA, USA
| | - P Campuzano-Jost
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,Department of Chemistry, University of Colorado, Boulder, CO, USA
| | - R Commane
- Department of Earth and Environmental Sciences and School of Engineering and Applied Sciences, Lamont-Doherty Earth Observatory, Columbia University, Palisades, NY, USA
| | - B Daube
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA
| | - M Dollner
- Aerosol Physics and Environmental Physics, Faculty of Physics, University of Vienna, Vienna, Austria
| | - M Fromm
- Naval Research Laboratory, Washington, DC, USA
| | - K D Froyd
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - A J Hills
- Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
| | - R S Hornbrook
- Atmospheric Chemistry Observations and Modeling Laboratory, National Center for Atmospheric Research, Boulder, CO, USA
| | - J L Jimenez
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,Department of Chemistry, University of Colorado, Boulder, CO, USA
| | - A Kupc
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,Aerosol Physics and Environmental Physics, Faculty of Physics, University of Vienna, Vienna, Austria
| | - K D Lamb
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - K McKain
- NOAA Global Monitoring Laboratory, Boulder, CO, USA
| | - F Moore
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,NOAA Global Monitoring Laboratory, Boulder, CO, USA
| | - D M Murphy
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA
| | - B A Nault
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,Department of Chemistry, University of Colorado, Boulder, CO, USA.,Center for Aerosol and Cloud Chemistry, Aerodyne Research Inc., Billerica, MA, USA
| | - J Peischl
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - A E Perring
- Department of Chemistry, Colgate University, Hamilton, NY, USA
| | | | - E A Ray
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - K H Rosenlof
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA
| | - T Ryerson
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA
| | - G P Schill
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - J C Schroder
- Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA.,Department of Chemistry, University of Colorado, Boulder, CO, USA.,Colorado Department of Public Health and Environment, Denver, CO, USA
| | - B Weinzierl
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA
| | - C Thompson
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - C J Williamson
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA.,Cooperative Institute for Research in Environmental Sciences, University of Colorado, Boulder, CO, USA
| | - S C Wofsy
- Department of Earth and Planetary Sciences, Harvard University, Cambridge, MA, USA
| | - P Yu
- Institute of Environmental and Climate Research, Jinan University, Guangzhou, People's Republic of China
| | - J P Schwarz
- National Oceanic and Atmospheric Administration (NOAA) Chemical Sciences Laboratory (CSL), Boulder, CO, USA
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19
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Dai L, Liu Y, Xu Q, Wang M, Zhu Q, Yu P, Zhong G, Zeng X. A Dynamic Kinetic Resolution Approach to Axially Chiral Diaryl Ethers by Catalytic Atroposelective Transfer Hydrogenation. Angew Chem Int Ed Engl 2023; 62:e202216534. [PMID: 36536515 DOI: 10.1002/anie.202216534] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/09/2022] [Revised: 12/03/2022] [Accepted: 12/15/2022] [Indexed: 12/24/2022]
Abstract
Diaryl ethers are widespread in biologically active compounds, ligands and catalysts. It is known that the diaryl ether skeleton may exhibit atropisomerism when both aryl rings are unsymmetrically substituted with bulky groups. Despite recent advances, only very few catalytic asymmetric methods have been developed to construct such axially chiral compounds. We describe herein a dynamic kinetic resolution approach to axially chiral diaryl ethers via a Brønsted acid catalyzed atroposelective transfer hydrogenation (ATH) reaction of dicarbaldehydes with anilines. The desired diaryl ethers could be obtained in moderate to good chemical yields (up to 79 %) and high enantioselectivities (up to 95 % ee) under standard reaction conditions. Such structural motifs are interesting precursors for further transformations and may have potential applications in the synthesis of chiral ligands or catalysts.
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Affiliation(s)
- Linlong Dai
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China.,Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, China.,School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, China
| | - Yuheng Liu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Qing Xu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Meifang Wang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Qiaohong Zhu
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
| | - Peiyuan Yu
- Department of Chemistry, Southern University of Science and Technology, Shenzhen, China
| | - Guofu Zhong
- Department of Chemistry, Eastern Institute for Advanced Study, Ningbo, China.,School of Chemistry and Chemical Engineering, Qufu Normal University, Qufu, China
| | - Xiaofei Zeng
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou, China
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20
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Shao X, Liu H, Hou F, Bai Y, Cui Z, Lin Y, Jiang X, Bai P, Wang Y, Zhang Y, Lu C, Liu H, Zhou S, Yu P. Development and validation of risk prediction models for stroke and mortality among patients with type 2 diabetes in northern China. J Endocrinol Invest 2023; 46:271-283. [PMID: 35972686 DOI: 10.1007/s40618-022-01898-0] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/18/2022] [Accepted: 08/01/2022] [Indexed: 01/25/2023]
Abstract
BACKGROUND Stroke is one of the leading causes of disability and mortality in patients with type 2 diabetes mellitus (T2DM). Risk models have been developed for predicting stroke and stroke-associated mortality among patients with T2DM. Here, we evaluated risk factors of stroke for individualized prevention measures in patients with T2DM in northern China. METHODS In the community-based Tianjin Chronic Disease Cohort study, 58,042 patients were enrolled between January 2014 and December 2019. We used multiple imputation (MI) to impute missing variables and univariate and multivariate Cox's proportional hazard regression to screen risk factors of stroke. Furthermore, we established and validated first-ever prediction models for stroke (Model 1 and Model 2) and death from stroke (Model 3) and evaluated their performance. RESULTS In the derivation and validation groups, the area under the curves (AUCs) of Models 1-3 was better at 5 years than at 8 years. The Harrell's C-index for all models was above 0.7. All models had good calibration, discrimination, and clinical net benefit. Sensitivity analysis using the MI dataset indicated that all models had good and stable prediction performance. CONCLUSION In this study, we developed and validated first-ever risk prediction models for stroke and death from stroke in patients with T2DM, with good discrimination and calibration observed in all models. Based on lifestyle, demographic characteristics, and laboratory examination, these models could provide multidimensional management and individualized risk assessment. However, the models developed here may only be applicable to Han Chinese.
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Affiliation(s)
- X Shao
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - H Liu
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - F Hou
- Community Health Service Center, Jiefang Road, Tanggu Street, Binhai New District, Tianjin, China
| | - Y Bai
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - Z Cui
- Department of Epidemiology and Health Statistics, Tianjin Medical University, Heping District, Tianjin, China
| | - Y Lin
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - X Jiang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - P Bai
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - Y Wang
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - Y Zhang
- Community Health Service Center, Jiefang Road, Tanggu Street, Binhai New District, Tianjin, China
| | - C Lu
- Community Health Service Center, Jiefang Road, Tanggu Street, Binhai New District, Tianjin, China
| | - H Liu
- Community Health Service Center, Jiefang Road, Tanggu Street, Binhai New District, Tianjin, China
| | - S Zhou
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China
| | - P Yu
- NHC Key Laboratory of Hormones and Development, Chu Hsien-I Memorial Hospital and Tianjin Institute of Endocrinology, Tianjin Medical University, Tianjin, 300134, China.
- Tianjin Key Laboratory of Metabolic Diseases, Tianjin Medical University, Tianjin, 300134, China.
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21
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Zhu Z, Yu P, Wu Y, Wu Y, Tan Z, Ling J, Ma J, Zhang J, Zhu W, Liu X. Sex Specific Global Burden of Osteoporosis in 204 Countries and Territories, from 1990 to 2030: An Age-Period-Cohort Modeling Study. J Nutr Health Aging 2023; 27:767-774. [PMID: 37754217 DOI: 10.1007/s12603-023-1971-4] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/11/2023] [Accepted: 07/26/2023] [Indexed: 09/28/2023]
Abstract
BACKGROUND Osteoporosis is a highly prevalent disease with distinct sex pattern. We aimed to estimate the sex specific incidence, prevalence, and disability-adjusted life (DALYs) years of osteoporosis between 1990 and 2019, with additional predictions from 2020 to 2034. METHODS We collected osteoporosis disease burden data from the Global Burden of Disease study covering the years 1990 through 2019 in 204 countries and territories. The data included information on the number of incident cases of osteoporosis, DALYs, age-standardized incidence rates (ASIR), age-standardized prevalence rates (ASPR) and age-standardized DALYs rates. Additionally, we performed an age-period-cohort analysis to forecast the burden of osteoporosis. RESULTS The global number of incidence cases of osteoporosis, in 2019, reached 41.5 million cases. From 1990 to 2019, the low-middle socio-demographic index (SDI) region had the highest estimated annual percentage change in the world. Compared to males, female's ASIR and ASPR were all about 1.5 times higher than males for the same years in the same SDI regions. The projected global total number of incidence cases for osteoporosis between 2030 and 2034 is estimated to reach 263.2 million (154.4 million for females and 108.8 for males). Additionally, the burden in terms of DALYs is predicted to be 128.7 million (with 78.4 million for females and 50.3 million for males). CONCLUSION The global burden of osteoporosis is still increasing, mainly observed in high SDI countries. Females bear a burden 1.5 times higher than males in terms of incidence and DALYs. Steps should be taken to reduce the osteoporosis burden, especially in high SDI countries.
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Affiliation(s)
- Z Zhu
- Jing Zhang, Department of Anesthesiology, The Second Affiliated Hospital of Nanchang University, 1st Minde Road, Nanchang, Jiangxi, 330006, China, E-mail: ; Xiao Liu, Department of Cardiology, Sun Yat-sen Memorial Hospital of Sun Yat-sen University, Guangzhou, 510080, Guangdong, China, E-mail:
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22
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Dai L, Liu Y, Xu Q, Wang M, Zhu Q, Yu P, Zeng X, Zhong G. A Dynamic Kinetic Resolution Approach to Axially Chiral Diaryl Ethers via Catalytic Atroposelective Transfer Hydrogenation. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202216534] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
Affiliation(s)
- Linlong Dai
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
| | - Yuheng Liu
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
| | - Qing Xu
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
| | - Meifang Wang
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
| | - Qiaohong Zhu
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
| | - Peiyuan Yu
- Southern University of Science and Technology Department of Chemistry Shenzhen CHINA
| | - Xiaofei Zeng
- Hangzhou Normal University College of Material, Chemistry and Chemical Engineering No. 16 Xuelin Street 310036 Hangzhou CHINA
| | - guofu Zhong
- Hangzhou Normal University College of Materials, Chemistry and Chemical Engineering 311121 Hangzhou CHINA
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23
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Wang F, Zhang Z, Chen Y, Ratovelomanana-Vidal V, Yu P, Chen GQ, Zhang X. Stereodivergent synthesis of chiral succinimides via Rh-catalyzed asymmetric transfer hydrogenation. Nat Commun 2022; 13:7794. [PMID: 36528669 PMCID: PMC9759521 DOI: 10.1038/s41467-022-35124-5] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Accepted: 11/18/2022] [Indexed: 12/23/2022] Open
Abstract
Chiral succinimide moieties are ubiquitous in biologically active natural products and pharmaceuticals. Until today, despite the great interest, little success has been made for stereodivergent synthesis of chiral succinimides. Here, we report a general and efficient method for accessing 3,4-disubstituted succinimides through a dynamic kinetic resolution strategy based on asymmetric transfer hydrogenation. The Rh catalyst system exhibit high activities, enantioselectivities, and diastereoselectivities (up to 2000 TON, up to >99% ee, and up to >99:1 dr). Products with syn- and anti-configuration are obtained separately by control of the reaction conditions. For the N-unprotected substrates, both the enol and the imide group can be reduced by control of reaction time and catalyst loading. In addition, the detailed reaction pathway and origin of stereoselectivity are elucidated by control experiments and theoretical calculations. This study offers a straightforward and stereodivergent approach to the valuable enantioenriched succinimides (all 4 stereoisomers) from cheap chemical feedstocks in a single reaction step.
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Affiliation(s)
- Fangyuan Wang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Zongpeng Zhang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Yu Chen
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Virginie Ratovelomanana-Vidal
- grid.4444.00000 0001 2112 9282PSL University, Chimie ParisTech, CNRS, Institute1 of Chemistry for Life and Health Sciences, CSB2D team, 75005 Paris, France
| | - Peiyuan Yu
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Gen-Qiang Chen
- grid.263817.90000 0004 1773 1790Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518000 China
| | - Xumu Zhang
- grid.263817.90000 0004 1773 1790Department of Chemistry, Shenzhen Grubbs Institute and Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518000 China
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24
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Deng H, Liu Q, Chen A, Kuang T, Yuan P, Gateno J, Kim D, Barber J, Xiong K, Yu P, Gu K, Xu X, Yan P, Shen D, Xia J. Clinical feasibility of deep learning-based automatic head CBCT image segmentation and landmark detection in computer-aided surgical simulation for orthognathic surgery. Int J Oral Maxillofac Surg 2022:S0901-5027(22)00425-8. [PMID: 36372697 PMCID: PMC10169531 DOI: 10.1016/j.ijom.2022.10.010] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2022] [Revised: 09/14/2022] [Accepted: 10/17/2022] [Indexed: 11/11/2022]
Abstract
The purpose of this ambispective study was to investigate whether deep learning-based automatic segmentation and landmark detection, the SkullEngine, could be used for orthognathic surgical planning. Sixty-one sets of cone beam computed tomography (CBCT) images were automatically inferred for midface, mandible, upper and lower teeth, and 68 landmarks. The experimental group included automatic segmentation and landmarks, while the control group included manual ones that were previously used to plan orthognathic surgery. The qualitative analysis of segmentation showed that all of the automatic results could be used for computer-aided surgical simulation. Among these, 98.4% of midface, 70.5% of mandible, 98.4% of upper teeth, and 93.4% of lower teeth could be directly used without manual revision. The Dice similarity coefficient was 96% and the average symmetric surface distance was 0.1 mm for all four structures. With SkullEngine, it took 4 minutes to complete the automatic segmentation and an additional 10 minutes for a manual touchup. The results also showed the overall mean difference between the two groups was 2.3 mm for the midface and 2.4 mm for the mandible. In summary, the authors believe that automatic segmentation using SkullEngine is ready for daily practice. However, the accuracy of automatic landmark digitization needs to be improved.
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25
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Gao S, Duan M, Andreola LR, Yu P, Wheeler SE, Houk KN, Chen M. Unusual Enantiodivergence in Chiral Brønsted Acid‐Catalyzed Asymmetric Allylation with β‐Alkenyl Allylic Boronates. Angew Chem Int Ed Engl 2022; 61:e202208908. [PMID: 35989224 DOI: 10.1002/anie.202208908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2022] [Indexed: 11/11/2022]
Abstract
We report herein a rare example of enantiodivergent aldehyde addition with β-alkenyl allylic boronates via chiral Brønsted acid catalysis. 2,6-Di-9-anthracenyl-substituted chiral phosphoric acid-catalyzed asymmetric allylation using β-vinyl substituted allylic boronate gave alcohols with R absolute configuration. The sense of asymmetric induction of the catalyst in these reactions is opposite to those in prior reports. Moreover, in the presence of the same acid catalyst, the reactions with β-2-propenyl substituted allylic boronate generated homoallylic alcohol products with S absolute configuration. Unusual substrate-catalyst C-H⋅⋅⋅π interactions in the favoured reaction transition state were identified as the origins of observed enantiodivergence through DFT computational studies.
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Affiliation(s)
- Shang Gao
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36849 USA
- China Pharmaceutical University Nanjing 210009 China
| | - Meng Duan
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
- Department of Chemistry and Shenzhen Grubbs Institute Southern University of Science and Technology Shenzhen 518055 China
| | | | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute Southern University of Science and Technology Shenzhen 518055 China
| | | | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California, Los Angeles Los Angeles CA 90095 USA
| | - Ming Chen
- Department of Chemistry and Biochemistry Auburn University Auburn AL 36849 USA
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26
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Wang F, Chen Y, Yu P, Chen GQ, Zhang X. Asymmetric Hydrogenation of Oximes Synergistically Assisted by Lewis and Brønsted Acids. J Am Chem Soc 2022; 144:17763-17768. [PMID: 36166275 DOI: 10.1021/jacs.2c07506] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022]
Abstract
Due to their low reactivity, difficult enantiocontrol, and proneness to N-O bond cleavage, the catalytic asymmetric hydrogenation of oximes to hydroxylamines has remained a significant challenge. Herein, a Lewis and Brønsted acid cooperation strategy was established for the asymmetric hydrogenation of oximes, providing the corresponding hydroxylamines with up to 95% yield and up to 96% ee. Addition of Lewis and Brønsted acid was crucial to obtain high conversion and enantioselectivity. Mechanistic investigations indicates that the thiourea fragment of the ligand, Lewis acid (In(OTf)3 or Zn(OAc)2), as well as the Brønsted acid (l-CSA) played vital roles in the control of reactivity and enantioselectivity of the reaction. In addition, the synthetic elaboration of this transformation was demonstrated by gram scale experiment with retention of the yield and enantioselectivity.
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Affiliation(s)
- Fangyuan Wang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518000, China
| | - Yu Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518000, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518000, China
| | - Gen-Qiang Chen
- Academy for Advanced Interdisciplinary Studies, Southern University of Science and Technology, Shenzhen, 518000, China
| | - Xumu Zhang
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518000, China
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27
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Refat B, Yu P. PSVIII-19 Predict Indigestible Fiber Fraction of Barley Plant Silage by Using non-Destructive Mid-IR vs Near-IR Spectroscopic Techniques. J Anim Sci 2022. [DOI: 10.1093/jas/skac247.726] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
The objective of this study was to reveal the potential of using Fourier transform mid-infrared (FTIR) and near infrared (NIR) spectroscopy as tools for the determination of indigestible neutral (NDF) fraction (iNDF) of barley plant silage. A total of 48 barley plant silage samples collected from different farms in Western Canada provinces were analyzed for iNDF. Reference values were matched with NIR and FTIR spectra. Spectral data processing (pretreatments) included first derivative (FD), standard normal variate (SNV), multiplicative scattering correction (MSC), second derivative (SD) and orthogonal signal correction (OSC). Prediction equations were obtained from each model using an external validation set. The determination coefficient of external validation (R2P) of iNDF was 0.62 for FTIR, while 0.41 for NIR and the corresponding ratio performance deviation (RPD) were 1.69 and 1.38 in FTIR and NIR, respectively. Results from this research showed the high potential of applying infrared molecular spectroscopy for the examination of forage plant fiber digestibility. More studies are needed to improve the accuracy and performance of FTIR and NIR spectroscopies in predicting the iNDF of barley plant silage samples.
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Affiliation(s)
| | - P Yu
- University of Saskatchewan
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28
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Oliveira A, Yu P. PSXIII-12 Characterization of Physiochemical and Nutrient Profiles of Feedstock and co-Products from Canola bio-oil Processing in Ruminants: Impacted by Source Origin. J Anim Sci 2022. [DOI: 10.1093/jas/skac247.612] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Abstract
The objective of this study was to characterize physiochemical and nutrient profiles of feedstock and co-products from canola processing that were impacted by source origin to compare feedstocks and co-products (mash and pellet) from five different bio-oil processing plants with five batches of samples in each processing plant in Canada (CA) and in China (CH) collected by the Canola Council of Canada (CCC). The detailed physicochemical and nutrients parameters for ruminants were determined in chemical composition, TDN and truly digestible nutrients, energy profile (ME, NE), and protein and carbohydrate subfractions and their degradation and digestion in dairy cows. The data were analyzed using the Mixed model procedure in SAS 9.4 with RCBD. The treatment differences were compared using Tukey method. The results showed CP was greater in CH meals (P=0.003). The EE was not different between CA and CH (P >0.05). TDN1x was similar in canola meals regardless of the country (P >0.05). CH meals and feedstock had greater tdCP and tdNDF than CA (P< 0.05), while CA had greater tdNFC (P< 0.05). The energy values of ME3x, NELp3x, NEm3x, and NEg3x were similar in canola meals from both countries (P >0.05). No differences were observed in the energy profile of feedstock between CA and CH (P >0.05). The results also showed that pelleting affected the protein fractionation of CA canola meals (P< 0.05). Canola meals were different between CA and CH in the soluble (PA2) and slowly degradable fractions (PB2) (P< 0.05). The carbohydrate fractions of soluble fiber (CB2), digestible fiber (CB3), and indigestible fiber (CC) were different among CH meals (P< 0.05). CH presented greater water-soluble carbohydrate (CA4, P=0.04) and less CB2 (P=0.01) and CC (P< 0.001) than CA canola meals. Although the seeds were similar within and between counties, the oil-extraction process and pelleting seemed to have generated some different aspects on the meals in both countries.
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Affiliation(s)
| | - P Yu
- University of Saskatchewan
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Feng X, Prates L, Yu P. PSI-18 Effect of Heat Processing Methods on Carbohydrate Subfractions and Degradation in Relation to Carbohydrate Molecular Spectral Profile of Barley Grain Using Advanced Molecular Spectroscopy in Ruminants. J Anim Sci 2022. [DOI: 10.1093/jas/skac247.657] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Abstract
Abstract
To our knowledge, there are few studies on the association between carbohydrate molecular structure spectral profiles of barley grain and ruminant-relevant nutritional characteristics. This study aimed to study associate processing-induced changes in carbohydrate molecular structure with changes in ruminant-relevant carbohydrate nutritional profiles. The heat processing methods included: dry roasting, autoclaving, and microwave irradiation. The ruminant-relevant carbohydrate nutritional profiles were determined which included carbohydrate chemical profiles, carbohydrate subfractions, ruminant-relevant carbohydrate digestion. The molecular structure spectral profiles were determined using vibrational molecular spectroscopy (ATR-FT/IR). The results showed that heat related processing significantly induced carbohydrate molecular spectral profiles. The heat related processing also significantly changed ruminant-relevant nutritional characteristics. There was an association between processing induced carbohydrate molecular structure changes and ruminant-relevant carbohydrate nutritional profiles. The advanced vibrational molecular spectroscopic technique (ATR-FTIR) shows the great potential as a fast analytical tool to predict ruminant-relevant carbohydrate nutritional characteristics.
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Affiliation(s)
- X Feng
- University of Saskatchewan
| | | | - P Yu
- University of Saskatchewan
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30
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Qiu J, Xu Y, Su S, Gao Y, Yu P, Ruan Z, Liao K. Auto Machine Learning Assisted Preparation of Carboxylic Acid by
TEMPO
‐catalyzed Primary Alcohol Oxidation. CHINESE J CHEM 2022. [DOI: 10.1002/cjoc.202200555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Jia Qiu
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals Guangzhou 510663 Guangdong Province P.R. China
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou 511436 P.R. China
- Bioland Laboratory Guangzhou 510005 Guangdong Province P.R. China
| | - Yougen Xu
- Bioland Laboratory Guangzhou 510005 Guangdong Province P.R. China
| | - Shimin Su
- Bioland Laboratory Guangzhou 510005 Guangdong Province P.R. China
| | - Yadong Gao
- Bioland Laboratory Guangzhou 510005 Guangdong Province P.R. China
| | - Peiyuan Yu
- Department of Chemistry Southern University of Science and Technology Shenzhen 518055 Guangdong Province P.R. China
| | - Zhixiong Ruan
- Guangzhou Municipal and Guangdong Provincial Key Laboratory of Molecular Target & Clinical Pharmacology, the NMPA and State Key Laboratory of Respiratory Disease, School of Pharmaceutical Sciences and the Fifth Affiliated Hospital Guangzhou Medical University Guangzhou 511436 P.R. China
| | - Kuangbiao Liao
- Guangdong Laboratory Animals Monitoring Institute, Guangdong Provincial Key Laboratory of Laboratory Animals Guangzhou 510663 Guangdong Province P.R. China
- Bioland Laboratory Guangzhou 510005 Guangdong Province P.R. China
- Guangzhou Laboratory Guangzhou 510320 Guangdong Province P.R. China
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31
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Qiu SQ, Chen Y, Peng XJ, He SJ, Cheng JK, Wang YB, Xiang SH, Song J, Yu P, Zhang JM, Tan B. Asymmetric Construction of Aryl‐Alkene Axis by Palladium‐Catalyzed Suzuki‐Miyaura Coupling Reaction. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202211211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Sheng-Qi Qiu
- Southern University of Science and Technology Chemistry CHINA
| | - Yu Chen
- Southern University of Science and Technology Chemistry CHINA
| | - Xiang-Jun Peng
- Southern University of Science and Technology Chemistry CHINA
| | - Shi-Jiang He
- Southern University of Science and Technology Chemistry CHINA
| | - Jun Kee Cheng
- Southern University of Science and Technology Chemistry CHINA
| | - Yong-Bin Wang
- Southern University of Science and Technology Chemistry CHINA
| | - Shao-Hua Xiang
- Southern University of Science and Technology Chemistry CHINA
| | - Jun Song
- Shenzhen University Chemistry CHINA
| | - Peiyuan Yu
- Southern University of Science and Technology Chemistry CHINA
| | | | - Bin Tan
- South University of Science and Technology of China Chemistry 1088 Tangchang Road, Nanshan District 518055 Shenzhen CHINA
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32
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Qiu SQ, Chen Y, Peng XJ, He SJ, Cheng JK, Wang YB, Xiang SH, Song J, Yu P, Zhang JM, Tan B. Asymmetric Construction of Aryl‐Alkene Axis by Palladium‐Catalyzed Suzuki‐Miyaura Coupling Reaction. Angew Chem Int Ed Engl 2022; 61:e202211211. [DOI: 10.1002/anie.202211211] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/30/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Sheng-Qi Qiu
- Southern University of Science and Technology Chemistry CHINA
| | - Yu Chen
- Southern University of Science and Technology Chemistry CHINA
| | - Xiang-Jun Peng
- Southern University of Science and Technology Chemistry CHINA
| | - Shi-Jiang He
- Southern University of Science and Technology Chemistry CHINA
| | - Jun Kee Cheng
- Southern University of Science and Technology Chemistry CHINA
| | - Yong-Bin Wang
- Southern University of Science and Technology Chemistry CHINA
| | - Shao-Hua Xiang
- Southern University of Science and Technology Chemistry CHINA
| | - Jun Song
- Shenzhen University Chemistry CHINA
| | - Peiyuan Yu
- Southern University of Science and Technology Chemistry CHINA
| | | | - Bin Tan
- South University of Science and Technology of China Chemistry 1088 Tangchang Road, Nanshan District 518055 Shenzhen CHINA
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33
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Halabi S, Luo B, Dzimitrowicz H, Hwang C, Wise-Draper T, Labaki C, McKay R, Ruiz E, Rangel-Escareño C, Farmakiotis D, Griffiths E, Jani C, Accordino M, Friese C, Wulff-Burchfield E, Puc M, Yu P, Topaloglu U, Mishra S, Warner J. 501P A prognostic model of all-cause mortality at 30 days in patients with cancer and COVID-19. Ann Oncol 2022. [PMCID: PMC9472539 DOI: 10.1016/j.annonc.2022.07.629] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/27/2022] Open
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34
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Jin S, Li J, Liu K, Ding WY, Wang S, Huang X, Li X, Yu P, Song Q. Publisher Correction: Enantioselective Cu-catalyzed double hydroboration of alkynes to access chiral gem-diborylalkanes. Nat Commun 2022; 13:4930. [PMID: 35995765 PMCID: PMC9395424 DOI: 10.1038/s41467-022-32433-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
Affiliation(s)
- Shengnan Jin
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Jinxia Li
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Kang Liu
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Wei-Yi Ding
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China
| | - Shuai Wang
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Xiujuan Huang
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Xue Li
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, China.
| | - Qiuling Song
- Institute of Next Generation Matter Transformation, College of Material Sciences Engineering, Huaqiao University, Xiamen, Fujian, 361021, China. .,School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan, 453007, China. .,State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, China.
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35
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Gao S, Duan M, Andreola LR, Yu P, Wheeler SE, Houk KN, Chen M. Unusual Enantiodivergence in Chiral Brønsted Acid‐Catalyzed Asymmetric Allylation with β‐Alkenyl Allylic Boronates. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202208908] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
Affiliation(s)
- Shang Gao
- Auburn University Chemistry and Biochemistry UNITED STATES
| | - Meng Duan
- University of California Los Angeles Chemistry and Biochemistry UNITED STATES
| | | | - Peiyuan Yu
- Southern University of Science and Technology Chemistry CHINA
| | | | - Kendall N. Houk
- University of California Los Angeles Chemistry and Biochemistry UNITED STATES
| | - Ming Chen
- Auburn University Chemistry and Biochemistry 179 chemistry building 36849 Auburn UNITED STATES
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36
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Lin X, Shen B, Wang Z, Cheng Y, Chen X, Li P, Yu P, Li W. Organocatalytic Enantioselective 1,10-Addition of Alkynyl Indole Imine Methides with Thiazolones: An Access to Axially Chiral Tetrasubstituted Allenes. Org Lett 2022; 24:4914-4918. [PMID: 35770873 DOI: 10.1021/acs.orglett.2c01794] [Citation(s) in RCA: 8] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
Abstract
An asymmetric organocatalytic remote 1,10-addition of alkynyl indole imine methides generated in situ from α-(6-indolyl) propargylic alcohols with thiazolones has been developed for the first time, affording axially chiral tetrasubstituted allenes featuring vicinal sulfur-containing quaternary carbon stereocenters in high yields with excellent stereoselectivities. The representative scale-up reaction and transformations of the 1,10-adduct were examined. The reaction mechanism was expounded by control experiments and DFT calculations.
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Affiliation(s)
- Xiao Lin
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao 266021, China
| | - Boming Shen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Ziyang Wang
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao 266021, China
| | - Yuyu Cheng
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Xuling Chen
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Pengfei Li
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, College of Science, Southern University of Science and Technology, Shenzhen 518055, China
| | - Wenjun Li
- Department of Medicinal Chemistry, School of Pharmacy, Qingdao University, Qingdao 266021, China
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37
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Jin MY, Zhen Q, Xiao D, Tao G, Xing X, Yu P, Xu C. Engineered non-covalent π interactions as key elements for chiral recognition. Nat Commun 2022; 13:3276. [PMID: 35672365 PMCID: PMC9174283 DOI: 10.1038/s41467-022-31026-8] [Citation(s) in RCA: 21] [Impact Index Per Article: 10.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2022] [Accepted: 05/25/2022] [Indexed: 12/31/2022] Open
Abstract
Molecular recognition and self-assembly are often mediated by intermolecular forces involving aromatic π-systems. Despite the ubiquity of such interactions in biological systems and in the design of functional materials, the elusive nature of aromatic π interaction results in that they have been seldom used as a design element for promoting challenging chemical reactions. Described here is a well-engineered catalytic system into which non-covalent π interactions are directly incorporated. Enabled by a lone pair-π interaction and a π-π stacking interaction operating collectively, efficient chiral recognition is successfully achieved in the long-pursued dihydroxylation-based kinetic resolution. Density functional theory calculations shed light on the crucial role played by the lone pair-π interaction between the carbonyl oxygen of the cinchona alkaloid ligand and the electron-deficient phthalazine π moiety of the substrate in the stereoselectivity-determining transition states. This discovery serves as a proof-of-principle example showing how the weak non-covalent π interactions, if ingeniously designed, could be a powerful guide in attaining highly enantioselective catalysis. Non-covalent π interactions have been rarely used as a design element for promoting chemical reactions. Here the authors report a Sharpless asymmetric dihydroxylation (SAD)-based kinetic resolution in which a-priori-designed non-covalent forces play a central role in differentiating the enantiomeric substrates.
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38
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Yan Q, Duan M, Chen C, Deng Z, Wu M, Yu P, He ML, Zhu G, Houk KN, Sun J. Organocatalytic discrimination of non-directing aryl and heteroaryl groups: enantioselective synthesis of bioactive indole-containing triarylmethanes. Chem Sci 2022; 13:5767-5773. [PMID: 35694360 PMCID: PMC9116282 DOI: 10.1039/d2sc00636g] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2022] [Accepted: 04/13/2022] [Indexed: 11/21/2022] Open
Abstract
Despite the enormous developments in asymmetric catalysis, the basis for asymmetric induction is largely limited to the spatial interaction between the substrate and catalyst. Consequently, asymmetric discrimination between two sterically similar groups remains a challenge. This is particularly formidable for enantiodifferentiation between two aryl groups without a directing group or electronic manipulation. Here we address this challenge by using a robust organocatalytic system leading to excellent enantioselection between aryl and heteroaryl groups. With versatile 2-indole imine methide as the platform, an excellent combination of a superb chiral phosphoric acid and the optimal hydride source provided efficient access to a range of highly enantioenriched indole-containing triarylmethanes. Control experiments and kinetic studies provided important insights into the mechanism. DFT calculations also indicated that while hydrogen bonding is important for activation, the key interaction for discrimination of the two aryl groups is mainly π–π stacking. Preliminary biological studies also demonstrated the great potential of these triarylmethanes for anticancer and antiviral drug development. Excellent enantiodiscrimination between aryl and heteroaryl groups without a directing group has been achieved with organocatalysis. The highly enantioenriched triarylmethane products exhibit anticancer and antiviral activities.![]()
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Affiliation(s)
- Qiaolin Yan
- Department of Chemistry, the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR China
| | - Meng Duan
- Department of Chemistry and Biochemistry, University of California Los Angeles California 90095 USA .,Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Cien Chen
- Department of Biomedical Sciences, City University of Hong Kong Kowloon Tong Hong Kong SAR China, .,CityU Shenzhen Research Institute Shenzhen China
| | - Zhiqing Deng
- CityU Shenzhen Research Institute Shenzhen China.,Department of Chemistry, City University of Hong Kong Kowloon Tong Hong Kong SAR China
| | - Mandi Wu
- Department of Biomedical Sciences, City University of Hong Kong Kowloon Tong Hong Kong SAR China, .,CityU Shenzhen Research Institute Shenzhen China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology Shenzhen 518055 China
| | - Ming-Liang He
- Department of Biomedical Sciences, City University of Hong Kong Kowloon Tong Hong Kong SAR China, .,CityU Shenzhen Research Institute Shenzhen China
| | - Guangyu Zhu
- CityU Shenzhen Research Institute Shenzhen China.,Department of Chemistry, City University of Hong Kong Kowloon Tong Hong Kong SAR China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California Los Angeles California 90095 USA
| | - Jianwei Sun
- Department of Chemistry, the Hong Kong Branch of Chinese National Engineering Research Centre for Tissue Restoration & Reconstruction, The Hong Kong University of Science and Technology (HKUST) Clear Water Bay Kowloon Hong Kong SAR China .,Shenzhen Research Institute, HKUST No. 9 Yuexing 1st Rd Shenzhen 518057 China
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39
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Chen Y, He P, Jana D, Wang D, Wang M, Yu P, Zhu W, Zhao Y. Glutathione-Depleting Organic Metal Adjuvants for Effective NIR-II Photothermal Immunotherapy. Adv Mater 2022; 34:e2201706. [PMID: 35357041 DOI: 10.1002/adma.202201706] [Citation(s) in RCA: 23] [Impact Index Per Article: 11.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2022] [Revised: 03/24/2022] [Indexed: 06/14/2023]
Abstract
Although photothermal immunotherapy (PTI) is a compelling strategy for tumor therapy, the development of promising photothermal agents to overcome the insufficient immunogenicity of tumor cells and the poor immune response encountered in PTI is still challenging. Herein, commercial small-molecule-based organic metal adjuvants (OMAs) are presented, with second near-infrared photoacoustic and photothermal properties as well as the ability to perturb redox homeostasis to potentiate immunogenicity and immune responsiveness. OMAs, assembled from charge-transfer complexes and characterized by a broad substrate scope, high accessibility, and flexibly tuned optical properties, demonstrate strong phototherapeutic and adjuvant abilities via the depletion of glutathione and cysteine, and subsequently elicit systemic immunity by evoking immunogenic cell death, promoting dendritic cell maturation, and increasing T cell infiltration. Furthermore, programmed cell death protein 1 antibody can be employed to synergize with OMAs to suppress tumor immune evasion and ultimately improve the treatment outcomes. This study unlocks new paradigms to provide a versatile OMA-based scaffold for future practical applications.
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Affiliation(s)
- Yun Chen
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Peiying He
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China
| | - Deblin Jana
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Dongdong Wang
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
| | - Menghao Wang
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Wei Zhu
- MOE International Joint Research Laboratory on Synthetic Biology and Medicines, School of Biology and Biological Engineering, South China University of Technology, Guangzhou, 510006, P. R. China
| | - Yanli Zhao
- Division of Chemistry and Biological Chemistry, School of Physical and Mathematical Sciences, Nanyang Technological University, 21 Nanyang Link, Singapore, 637371, Singapore
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40
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Liu LT, Chin AWH, Yu P, Poon LLM, Huang MX. Anti-pathogen stainless steel combating COVID-19. Chem Eng J 2022; 433:133783. [PMID: 34853550 PMCID: PMC8613009 DOI: 10.1016/j.cej.2021.133783] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/01/2021] [Revised: 10/05/2021] [Accepted: 11/19/2021] [Indexed: 05/05/2023]
Abstract
Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) exhibits strong stability on conventional stainless steel (SS) surface, with infectious virus detected even after two days, posing a high risk of virus transmission via surface touching in public areas. In order to mitigate the surface toughing transmission, the present study develops the first SS with excellent anti-pathogen properties against SARS-COV-2. The stabilities of SARS-CoV-2, H1N1 influenza A virus (H1N1), and Escherichia coli (E.coli) on the surfaces of Cu-contained SS, pure Cu, Ag-contained SS, and pure Ag were investigated. It is discovered that pure Ag and Ag-contained SS surfaces do not display apparent inhibitory effects on SARS-CoV-2 and H1N1. In comparison, both pure Cu and Cu-contained SS with a high Cu content exhibit significant antiviral properties. Significantly, the developed anti-pathogen SS with 20 wt% Cu can distinctly reduce 99.75% and 99.99% of viable SARS-CoV-2 on its surface within 3 and 6 h, respectively. In addition, the present anti-pathogen SS also exhibits an excellent inactivation ability for H1N1 influenza A virus (H1N1), and Escherichia coli (E.coli). Interestingly, the Cu ion concentration released from the anti-pathogen SS with 10 wt% and 20 wt% Cu was notably higher than the Ag ion concentration released from Ag and the Ag-contained SS. Lift buttons made of the present anti-pathogen SS are produced using mature powder metallurgy technique, demonstrating its potential applications in public areas and fighting the transmission of SARS-CoV-2 and other pathogens via surface touching.
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Affiliation(s)
- L T Liu
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
- Department of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518000, PR China
| | - A W H Chin
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, PR China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, PR China
| | - P Yu
- Department of Materials Science and Engineering, Southern University of Science and Technology, 1088 Xueyuan Avenue, Shenzhen 518000, PR China
| | - L L M Poon
- School of Public Health, LKS Faculty of Medicine, The University of Hong Kong, 21 Sassoon Road, Hong Kong, PR China
- Centre for Immunity and Infection, Hong Kong Science Park, Hong Kong, PR China
- HKU-Pasteur Research Pole, LKS Faculty of Medicine, The University of Hong Kong, Hong Kong, PR China
| | - M X Huang
- Department of Mechanical Engineering, The University of Hong Kong, Pokfulam Road, Hong Kong, PR China
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41
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Lilley D, Yu P, Ma J, Jain A, Prasher R. Thermal fluids with high specific heat capacity through reversible Diels-Alder reactions. iScience 2022; 25:103540. [PMID: 35005529 PMCID: PMC8715154 DOI: 10.1016/j.isci.2021.103540] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/12/2021] [Revised: 10/28/2021] [Accepted: 11/29/2021] [Indexed: 11/05/2022] Open
Abstract
Thermal fluids are used as heat transfer fluids and thermal energy storage media in many energy technologies ranging from solar thermal heating to battery thermal management. The heat capacity of state-of-the-art thermal fluids remains ∼50% of that of water (which suffers from a limited operation range between 0°C and 100°C), and their viscosities are typically more than one order of magnitude higher than that of water. Our results demonstrate that the heat capacity of the proposed thermochemical fluid is significantly higher than that of state-of-the-art thermal fluids over a broad temperature range and is also higher than that of water between 60°C and 90°C. The viscosity of our liquid is only 3 times higher than that of water, and the operating temperature range is between −90°C and 135°C. Furthermore, a model was developed allowing for novel design of thermochemical thermal fluids in the future with even higher heat capacity. Novel thermal fluid using dissolved reactants for enhanced heat capacity Exceeds the heat capacity of water between 60°C and 90°C Thermal window between −90°C and 135°C and viscosity only 3x that of water Molecular model inputs for Cp matches well with experimental data
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Affiliation(s)
- Drew Lilley
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA
| | - Peiyuan Yu
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Jason Ma
- Department of Chemistry, University of California, Berkeley, CA 94720, USA
| | - Anubhav Jain
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA
| | - Ravi Prasher
- Lawrence Berkeley National Laboratory, Berkeley, CA 94720, USA.,Department of Mechanical Engineering, University of California, Berkeley, CA 94720, USA
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42
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Tan JP, Li K, Shen B, Zhuang C, Liu Z, Xiao K, Yu P, Yi B, Ren X, Wang T. Asymmetric synthesis of N-bridged [3.3.1] ring systems by phosphonium salt/Lewis acid relay catalysis. Nat Commun 2022; 13:357. [PMID: 35042870 PMCID: PMC8766524 DOI: 10.1038/s41467-022-28001-8] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2021] [Accepted: 12/16/2021] [Indexed: 02/05/2023] Open
Abstract
Optically pure pseudo-natural products (PNPs), particularly exemplified by azabicyclo[3.3.1]nonane molecules and their analogs provide an attractive platform for structure-activity relationship studies, and also lead new compound discovery in drug development. However, there are currently no examples of guiding catalytic asymmetric strategies available to construct such important PN-scaffolds, thus limiting their broad use. Here, we report a general and modular method for constructing these pseudo-natural N-bridged [3.3.1] ring systems via cascade process by bifunctional phosphonium salt/Lewis acid relay catalysis. A wide variety of substrates bearing an assortment of functional groups (59 examples) are compatible with this protocol. Other features include a [3 + 2] cyclization/ring-opening/Friedel-Crafts cascade pathway, excellent reactivities and stereoselectivities, easily available starting materials, step economy and scalability. The obtained enantioenriched products showed potential of preliminary anticancer activities. Insights gained from our studies are expected to advance general efforts towards the catalytic synthesis of challenging even unprecedented chiral PNPs, offering new opportunities for bioactive small-molecule discovery.
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Affiliation(s)
- Jian-Ping Tan
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China
- Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P. R. China
| | - Kehan Li
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China
| | - Boming Shen
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, P. R. China
| | - Cheng Zhuang
- Precision Medicine Research Center & Sichuan Provincial Key Laboratory of Precision Medicine, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Zanjiao Liu
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China
| | - Kai Xiao
- Precision Medicine Research Center & Sichuan Provincial Key Laboratory of Precision Medicine, West China Hospital, Sichuan University, Chengdu, 610041, P. R. China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, 518055, P. R. China.
| | - Bing Yi
- Hunan Province Key Laboratory of Environmental Catalysis and Waste Recycling, College of Materials and Chemical Engineering, Hunan Institute of Engineering, Xiangtan, P. R. China.
| | - Xiaoyu Ren
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China
| | - Tianli Wang
- Key Laboratory of Green Chemistry & Technology of Ministry of Education, College of Chemistry, Sichuan University, Chengdu, P. R. China.
- Beijing National Laboratory for Molecular Sciences, Beijing, 100190, China.
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43
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Jin MY, Zhou Y, Xiao D, You Y, Zhen Q, Tao G, Yu P, Xing X. Simultaneous Kinetic Resolution and Asymmetric Induction within a Borrowing Hydrogen Cascade Mediated by a Single Catalyst. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202112993] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Ming Yu Jin
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Yali Zhou
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Dengmengfei Xiao
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Yipeng You
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Qianqian Zhen
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Guanyu Tao
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Peiyuan Yu
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Xiangyou Xing
- Shenzhen Grubbs Institute and Department of Chemistry Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
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44
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Duan M, Díaz‐Oviedo CD, Zhou Y, Chen X, Yu P, List B, Houk KN, Lan Y. Chiral Phosphoric Acid Catalyzed Conversion of Epoxides into Thiiranes: Mechanism, Stereochemical Model, and New Catalyst Design. Angew Chem Int Ed Engl 2022. [DOI: 10.1002/ange.202113204] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
Affiliation(s)
- Meng Duan
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
- Department of Chemistry and Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | | | - Yang Zhou
- Department of Chemistry and Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Xiangyang Chen
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute Guangdong Provincial Key Laboratory of Catalysis Southern University of Science and Technology Shenzhen 518055 China
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung 45470 Mülheim an der Ruhr Germany
| | - Kendall N. Houk
- Department of Chemistry and Biochemistry University of California Los Angeles CA 90095 USA
| | - Yu Lan
- Green Catalysis Center and College of Chemistry Zhengzhou University Zhengzhou Henan 450001 China
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45
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Wang N, Fan LW, Zhang J, Gu QS, Lin JS, Chen GQ, Liu XY, Yu P. Chiral N-Triflylphosphoramide-Catalyzed Asymmetric Hydroamination of Unactivated Alkenes: A Hetero-Ene Reaction Mechanism. Org Chem Front 2022. [DOI: 10.1039/d1qo01874d] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
A highly enantioselective intramolecular hydroamination reaction catalyzed by chiral N-triflylphosphoramide (NTPA) that covers an exceptionally broad substrate scope of isolated unactivated alkenes was recently reported by some of us. Herein...
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46
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Shen B, Chen Y, Yu P. Mechanism and origin of regioselectivity in Rh-catalyzed desymmetric [2 + 2 + 2] cycloaddition: charge versus π–π stacking interaction. Org Chem Front 2022. [DOI: 10.1039/d2qo00682k] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Competition between different types of electronic effects (charge versus π–π stacking) controls the regioselectivity of Rh-catalyzed [2 + 2 + 2] cycloaddition.
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Affiliation(s)
- Boming Shen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Yu Chen
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Guangdong Provincial Key Laboratory of Catalysis, Southern University of Science and Technology, Shenzhen 518055, China
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47
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Guo X, Shen B, Liu C, Zhao H, Li X, Yu P, Li P. Rational Design and Organocatalytic Enantioselective [1+4]-Annulations of MBH Carbonates with Modified Enones. Org Chem Front 2022. [DOI: 10.1039/d2qo01670b] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
According to the frontier molecular orbital theory, two types of modified enones have been designed and successfully applied in the chiral phosphine-catalyzed stereoselective [1+4]-annulation of Morita-Baylis-Hillman (MBH) carbonates for the...
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48
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Shi Y, Yang G, Shen B, Yang Y, Yan L, Yang F, Liu J, Liao X, Yu P, Bin Z, You J. Insight into Regioselective Control in Aerobic Oxidative C-H/C-H Coupling for C3-Arylation of Benzothiophenes: Toward Structurally Nontraditional OLED Materials. J Am Chem Soc 2021; 143:21066-21076. [PMID: 34852463 DOI: 10.1021/jacs.1c11277] [Citation(s) in RCA: 18] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/18/2022]
Abstract
The installation of (benzo)thiophene-containing biaryls via coupling reactions has become a staple in designing photoelectric materials. Undeniably, C-H/C-H cross-coupling reactions between two (hetero)aromatics would be a shortcut toward these structural fragments. While more reliable cross-coupling technologies are well-established to provide C2-arylated (benzo)thiophenes, efficient methods that arylate the C3-position remain underdeveloped. Herein we provide insight into the factors that determine regioselectivity switching for these cross-coupling reactions. X-ray crystallographic analysis gives solid evidence for the key roles of triflate in regioselective dearomatization and acetate in base-assisted anti-β-deprotonated rearomatization. The first isolation and X-ray characterization of a medium-sized dearomatized cyclometalated adduct involving both substrates provide extra insight into aerobic oxidative Ar-H/Ar-H cross-coupling reactions. The mechanistic breakthrough incubates the first example, enabling C-H/C-H-type C3-arylation of benzothiophenes. Finally, this chemistry is used to design blue-emitting thermally activated delayed fluorescence (TADF) materials with a helicene conformation that exhibit a high maximum external quantum efficiency of 25.4% in OLED.
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Affiliation(s)
- Yang Shi
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Ge Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Boming Shen
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Yudong Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Lipeng Yan
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Feng Yang
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Jiahui Liu
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Xingrong Liao
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen 518055, People's Republic of China
| | - Zhengyang Bin
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
| | - Jingsong You
- Key Laboratory of Green Chemistry and Technology of Ministry of Education, College of Chemistry, Sichuan University, 29 Wangjiang Road, Chengdu 610064, People's Republic of China
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49
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Houk KN, Duan M, Díaz-Oviedo CD, Zhou Y, Chen X, Yu P, List B, Lan Y. Chiral Phosphoric Acid Catalyzed Conversion of Epoxides into Thiiranes: Mechanism, Stereochemical Model, and New Catalyst Design. Angew Chem Int Ed Engl 2021; 61:e202113204. [PMID: 34889494 PMCID: PMC9305870 DOI: 10.1002/anie.202113204] [Citation(s) in RCA: 7] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2021] [Indexed: 11/28/2022]
Abstract
Computations and experiments leading to new chiral phosphoric acids (CPAs) for epoxide thionations are reported. Density functional theory calculations reveal the mechanism and origin of the enantioselectivity of such CPA‐catalyzed epoxide thionations. The calculated mechanistic information was used to design new efficient CPAs that were tested experimentally and found to be highly effective. Bulky ortho‐substituents on the 3,3′‐aryl groups of the CPA are important to restrict the position of the epoxide in the key transition states for the enantioselectivity‐determining step. Larger para‐substituents significantly improve the enantioselectivity of the reaction.
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Affiliation(s)
- Kendall N Houk
- University of California, Los Angeles, Department of Chemistry and Biochemistry, 607 Charles E Young Drive East, 90095, Los Angeles, UNITED STATES
| | - Meng Duan
- Zhengzhou University, College of Chemistry and Molecular Engineering, CHINA
| | - Christian David Díaz-Oviedo
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung, Homogeneous Catalysis, GERMANY
| | - Yang Zhou
- Southern University of Science and Technology, Chemistry, CHINA
| | - Xiangyang Chen
- University of California Los Angeles, Chemistry and Biochemistry, UNITED STATES
| | - Peiyuan Yu
- Southern University of Science and Technology, Chemistry, CHINA
| | - Benjamin List
- Max-Planck-Institut für Kohlenforschung: Max-Planck-Institut fur Kohlenforschung, Homogeneous Catalysis, GERMANY
| | - Yu Lan
- Zhengzhou University, College of Chemistry and Molecular Engineering, CHINA
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50
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Zhao F, Yu P, Chen Y, Liu F, Houk KN. π-Facial Stereoselectivity in Acyl Nitroso Cycloadditions to 5,5-Unsymmetrically Substituted Cyclopentadienes: Computational Exploration of Origins of Selectivity and the Role of Substituent Conformations on Selectivity. J Org Chem 2021; 86:17082-17089. [PMID: 34783567 DOI: 10.1021/acs.joc.1c02191] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The π-facial selectivity of Diels-Alder cycloadditions of 5-monosubstituted cyclopentadienes is known experimentally and has been extensively studied computationally. Previous studies on 5-monosubstituted cyclopentadienes by the Burnell and Houk groups showed that facial selectivity arises principally from hyperconjugative aromaticity or antiaromaticity of polar groups that cause distortion of the cyclopentadiene; steric effects of nonpolar groups can also be important. We have now explored the stereoselective cycloaddition of 5,5-unsymmetrically substituted cyclopentadienes to an acyl nitroso dienophile reported by Kan and co-workers. Computational studies with M06-2X/6-311+G(d,p) indicate that the stereoselectivity in the cycloadditions of 5,5-unsymmetrically substituted cyclopentadienes is not just a simple combination of effects found for monosubstituted counterparts. Substituent conformations and diene-dienophile steric and electronic interaction effects all influence stereoselectivity. Predictions are made about several as-yet-unstudied cyclopentadiene cycloadditions.
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Affiliation(s)
- Fengyue Zhao
- College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Peiyuan Yu
- Department of Chemistry and Shenzhen Grubbs Institute, Southern University of Science and Technology, Shenzhen, Guangdong 518055, China
| | - Yu Chen
- College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - Fang Liu
- College of Sciences, Nanjing Agricultural University, Nanjing, Jiangsu 210095, China
| | - K N Houk
- Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, California 90095, United States
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