1
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Wu X, Li W. The Applications of
β
‐Keto
Amides for Heterocycle Synthesis. J Heterocycl Chem 2022. [DOI: 10.1002/jhet.4497] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Xiaoqiang Wu
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai P. R. China
| | - Wanfang Li
- School of Materials and Chemistry University of Shanghai for Science and Technology Shanghai P. R. China
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2
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Zou N, Liu Z, Yan G, Wang Y, Liang C, Mo D. DBU‐Promoted 6π‐Azaelectrocyclization and Hydrogen‐Migration to Prepare 6‐Alkyl Pyridine
N
‐Oxides from
N
‐Vinyl‐
α
,
β
‐Unsaturated Nitrones. Adv Synth Catal 2022. [DOI: 10.1002/adsc.202200066] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Ning Zou
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Zhang‐Wei Liu
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Gong‐Gui Yan
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Ying‐Chun Wang
- College of Chemistry and Chemical Engineering Jishou University Jishou 416000, People's Republic of China
| | - Cui Liang
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
| | - Dong‐Liang Mo
- State Key Laboratory for Chemistry and Molecular Engineering of Medicinal Resources, Collaborative Innovation Center for Guangxi Ethnic Medicine, School of Chemistry and Pharmaceutical Sciences Guangxi Normal University 15 Yu Cai Road Guilin 541004, People's Republic of China
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3
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He H, Xu N, Zhang H, Chen B, Hu Z, Guo K, Chun J, Cao S, Zhu Y. Brønsted acid-promoted hydroamination of unsaturated hydrazones: access to biologically important 5-arylpyrazolines. RSC Adv 2021; 11:17340-17345. [PMID: 35479684 PMCID: PMC9033072 DOI: 10.1039/d1ra03043d] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Accepted: 04/29/2021] [Indexed: 12/25/2022] Open
Abstract
A novel and efficient Brønsted acid-promoted hydroamination of hydrazone-tethered olefins has been developed. A variety of pyrazolines have been easily obtained in good to excellent yields with high chemo- and regioselectivity under simple and mild conditions. This method represents a straightforward, facile, and practical approach toward biologically important 5-arylpyrazolines, which are difficult to access by previously reported radical hydroamination of β,γ-unsaturated hydrazones. An efficient, chemo- and regioselective Brønsted acid-promoted hydroamination reaction of hydrazone-tethered olefins towards 5-arylpyrazolines was developed.![]()
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Affiliation(s)
- Han He
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Ning Xu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Honglin Zhang
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Bin Chen
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Zhengnan Hu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Kang Guo
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Jianlin Chun
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Shujun Cao
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
| | - Yingguang Zhu
- Jiangsu Key Laboratory of Pesticide Science
- Department of Chemistry
- College of Sciences
- Nanjing Agricultural University
- Nanjing 210095
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4
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Wang J, Wang X, Zheng Z, Ma J, Wang X, Lee WK, Shim YK, Yoon I, Chen J, Li J. Efficient
Metal‐Free
Synthesis of Dihydro[1,3]oxazines Assisted by Intramolecular Hydrogen Bonding. B KOREAN CHEM SOC 2020. [DOI: 10.1002/bkcs.12093] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Affiliation(s)
- Jian Wang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Xiangmin Wang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Zhong Zheng
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Jihua Ma
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Xu Wang
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Woo Kyoung Lee
- Center for Nano Manufacturing and Department of Nanoscience and Engineering Inje University Gimhae, Gyeongnam 50834 Republic of Korea
| | - Young Key Shim
- Center for Nano Manufacturing and Department of Nanoscience and Engineering Inje University Gimhae, Gyeongnam 50834 Republic of Korea
| | - Il Yoon
- Center for Nano Manufacturing and Department of Nanoscience and Engineering Inje University Gimhae, Gyeongnam 50834 Republic of Korea
| | - Jinchun Chen
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
| | - Jiazhu Li
- College of Chemistry and Chemical Engineering Yantai University Yantai 264005 China
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5
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Fang Y, Liao G, Guo H, Yu B, Liu HM. Synthesis of biologically relevant steroidal spiro β-lactams from dienamides through the cascade 4-endo N-cyclization/aerobic oxidation sequence. Steroids 2020; 159:108635. [PMID: 32169578 DOI: 10.1016/j.steroids.2020.108635] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/04/2020] [Revised: 02/27/2020] [Accepted: 03/04/2020] [Indexed: 11/26/2022]
Abstract
The steroid nucleus and β-lactam are prevalent in natural products and drug molecules, the compounds containing such fragments always possess diverse and interesting biological profiles. Presented here is an unprecedented cascade 4-endo N-cyclization/aerobic oxidation sequence that enables the synthesis of biologically relevant steroidal spiro β-lactams from dienamides. Of note, two continuous quaternary chiral centers were constructed simultaneously in this process, and the title compounds bearing the OH and CN groups are highly functionalized, allowing for late-stage transformations for construction of diverse compound library. The protocol has several advantages such as mild reaction conditions and short reaction time, therefore could serve as a new strategy for synthesizing β-lactams.
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Affiliation(s)
- Yuan Fang
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Guochao Liao
- Joint Laboratory for Translational Cancer Research of Chinese Medicine of the Ministry of Education of the People's Republic of China, International Institute for Translational Chinese Medicine, Guangzhou University of Chinese Medicine, Guangzhou, Guangdong 510006, China
| | - Hao Guo
- Chongqing Institute of Forensic Science, Chongqing 400021, China
| | - Bin Yu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China.
| | - Hong-Min Liu
- School of Pharmaceutical Sciences, Zhengzhou University, Zhengzhou 450001, China.
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6
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Yan J, Song Z, Zhao C, Shi K, Yang L, Zhong G. Highly Chemoselective and Enantioselective Synthesis of 3,4-2 H-Pyrindin-2-ones by an NHC-Catalyzed [3 + 3] Cyclization. Org Lett 2020; 22:3329-3334. [PMID: 32157889 DOI: 10.1021/acs.orglett.0c00699] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
A highly chemoselective and enantioselective cyclization of γ-chloroenals and ketimines has been developed to synthesize enantiopure 3,4-2H-pyrindin-2-ones as major products. It is proposed that the intermediate enone IV reacted with an enamine to proceed with a [3 + 3] cyclization, thereby affording 3,4-2H-pyrindin-2-ones as major products. Interestingly, the addition of LiCl promoted the formation of the enamine and accelerated the [3 + 3] cyclization. In contrast, the [4 + 2] cycloaddition reaction between the intermediate vinyl enolate VIII and an imine offered 5,6-2H-pyrindin-2-ones as minor products. This protocol represents the exceptional potential of N-heterocyclic carbene (NHC) catalytic reactions in accessing biologically active 3,4-2H-pyrindin-2-one derivatives in good yield with high chemoselectivities and excellent enantiomeric purities.
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Affiliation(s)
- Jun Yan
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Zhaoxin Song
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Chengtao Zhao
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Kuangxi Shi
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Limin Yang
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
| | - Guofu Zhong
- College of Materials, Chemistry and Chemical Engineering, Hangzhou Normal University, Hangzhou 311121, China
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7
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Sun Y, Wang X, Shen G, Yang T, Yang Y, Li J, Yang M, Sun H, Wei J. A 6π Azaelectrocyclization Strategy towards the 1,5,9‐Triazacoronenes. Adv Synth Catal 2020. [DOI: 10.1002/adsc.201901433] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/17/2023]
Affiliation(s)
- Yi‐Xun Sun
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Xiao‐Gang Wang
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Guo‐Dong Shen
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Tian Yang
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Yi‐Hui Yang
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Jing Li
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Ming‐Yu Yang
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Hua‐Ming Sun
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
| | - Jun‐Fa Wei
- School of Chemistry and Materials Science, Key Laboratory for Macromolecular Science of Shaanxi ProvinceShaanxi Normal University Xi'an 710062 People's Republic of China
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8
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Flynn AJ, Ford A, Maguire AR. Synthetic and mechanistic aspects of sulfonyl migrations. Org Biomol Chem 2020; 18:2549-2610. [DOI: 10.1039/c9ob02587a] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
Sulfonyl migrations, frequently described as ‘unusual’ or ‘unexpected’, from the last 20 years, including 1,2-, 1,3-, 1,4-, 1,5-, 1,6- and 1,7-sulfonyl shifts, through either radical or polar processes, either inter- or intramolecularly are reviewed.
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Affiliation(s)
- Aaran J. Flynn
- School of Chemistry
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
| | - Alan Ford
- School of Chemistry
- Analytical and Biological Research Facility
- University College Cork
- Cork
- Ireland
| | - Anita R. Maguire
- School of Chemistry and School of Pharmacy
- Analytical and Biological Research Facility
- Synthesis and Solid State Pharmaceutical Centre
- University College Cork
- Cork
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9
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Wan Y, Zheng X, Ma C. Conjugated Dienyne-Imides as Robust Precursors of 1-Azatrienes for 6π Electrocyclizations to Furo[2,3-b
]dihydropyridine Cores. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/ange.201800303] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Affiliation(s)
- Yanjun Wan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Xuchun Zheng
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Cheng Ma
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
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10
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Wan Y, Zheng X, Ma C. Conjugated Dienyne-Imides as Robust Precursors of 1-Azatrienes for 6π Electrocyclizations to Furo[2,3-b
]dihydropyridine Cores. Angew Chem Int Ed Engl 2018. [DOI: 10.1002/anie.201800303] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Yanjun Wan
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Xuchun Zheng
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
| | - Cheng Ma
- Department of Chemistry; Zhejiang University; Hangzhou 310027 China
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11
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Zhang Z, Gao X, Wan Y, Huang Y, Huang G, Zhang G. Ammonium Acetate-Promoted One-Pot Tandem Aldol Condensation/Aza-Addition Reactions: Synthesis of 2,3,6,7-Tetrahydro-1 H-pyrrolo[3,2- c]pyridin-4(5 H)-ones. ACS OMEGA 2017; 2:6844-6851. [PMID: 31457270 PMCID: PMC6645481 DOI: 10.1021/acsomega.7b00626] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/18/2017] [Accepted: 10/03/2017] [Indexed: 06/10/2023]
Abstract
An efficient tandem intermolecular one-pot aldol condensation/aza-addition reaction of 2-methyl-3-carbamoylpyrroles and aldehydes was developed for the synthesis of 2,3,6,7-tetrahydro-1H-pyrrolo[3,2-c]pyridin-4(5H)-ones. The reaction proceeded using only 3.0 equiv of ammonium acetate promoter in green solvent poly(ethylene glycol)-400 at 100 °C to afford a series of pyrrolo[3,2-c]pyridinone derivatives in good to excellent yields.
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Affiliation(s)
- Zhiguo Zhang
- Henan
Key laboratory of Organic Functional Molecule and Drug Innovation,
Collaborative Innovation Center of Henan Province for Green Manufacturing
of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions,
Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
- Jilin
Province Key Laboratory of Organic Functional Molecular Design &
Synthesis, Northeast Normal University, Jilin, Changchun 130024, China
| | - Xiaolong Gao
- Henan
Key laboratory of Organic Functional Molecule and Drug Innovation,
Collaborative Innovation Center of Henan Province for Green Manufacturing
of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions,
Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yameng Wan
- Henan
Key laboratory of Organic Functional Molecule and Drug Innovation,
Collaborative Innovation Center of Henan Province for Green Manufacturing
of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions,
Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Yuanyuan Huang
- Henan
Key laboratory of Organic Functional Molecule and Drug Innovation,
Collaborative Innovation Center of Henan Province for Green Manufacturing
of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions,
Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
| | - Guoqing Huang
- Handan
Purification Equipment Research Institute, Handan, Hebei 056027, China
| | - Guisheng Zhang
- Henan
Key laboratory of Organic Functional Molecule and Drug Innovation,
Collaborative Innovation Center of Henan Province for Green Manufacturing
of Fine Chemicals, Key Laboratory of Green Chemical Media and Reactions,
Ministry of Education, School of Chemistry and Chemical Engineering, Henan Normal University, Xinxiang, Henan 453007, China
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12
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Hampton CS, Harmata M. Electrophilic trapping of α-lithio dienyl sulfones. Tetrahedron Lett 2017. [DOI: 10.1016/j.tetlet.2017.05.026] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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13
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Li X, Yu H, Huang Y. Amine-Triggered 6π-Electrocyclization-Aromatization Cascade of Ynedienamines. Adv Synth Catal 2017. [DOI: 10.1002/adsc.201601146] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/02/2023]
Affiliation(s)
- Xijian Li
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University; Shenzhen Graduate School; Shenzhen 518055 People's Republic of China
- Institute of Materials; China Academy of Engineering Physics, Jiangyou, Mianyang; Sichuan 621907 People's Republic of China
| | - Huidong Yu
- Rongene Pharma Co., Ltd., Shenzhen; Guangdong 518054 People's Republic of China
| | - Yong Huang
- Key Laboratory of Chemical Genomics, School of Chemical Biology and Biotechnology, Peking University; Shenzhen Graduate School; Shenzhen 518055 People's Republic of China
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14
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Pairas GN, Tsoungas PG. H-Bond: Τhe Chemistry-Biology H-Bridge. ChemistrySelect 2016; 1:4520-4532. [PMID: 32328512 PMCID: PMC7169486 DOI: 10.1002/slct.201600770] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/19/2016] [Accepted: 07/29/2016] [Indexed: 12/19/2022]
Abstract
H-bonding, as a non covalent stabilizing interaction of diverse nature, has a central role in the structure, function and dynamics of chemical and biological processes, pivotal to molecular recognition and eventually to drug design. Types of conventional and non conventional (H-H, dihydrogen, H- π, CH- π, anti- , proton coordination and H-S) H-bonding interactions are discussed as well as features emerging from their interplay, such as cooperativity (σ- and π-) effects and allostery. Its utility in many applications is described. Catalysis, proton and electron transfer processes in various materials or supramolecular architectures of preorganized hosts for guest binding, are front-line technology. The H-bond-related concept of proton transfer (PT) addresses energy issues or deciphering the mechanism of many natural and synthetic processes. PT is also of paramount importance in the functions of cells and is assisted by large complex proteins embedded in membranes. Both intermolecular and intramolecular PT in H-bonded systems has received attention, theoretically and experimentally, using prototype molecules. It is found in rearrangement reactions, protein functions, and enzyme reactions or across proton channels and pumps. Investigations on the competition between intra- and intermolecular H bonding are discussed. Of particular interest is the H-bond furcation, a common phenomenon in protein-ligand binding. Multiple H-bonding (H-bond furcation) is observed in supramolecular structures.
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Affiliation(s)
- George N. Pairas
- Department of PharmacyLaboratory of Medicinal ChemistryUniversity of PatrasGR-265 04PatrasGreece
| | - Petros G. Tsoungas
- Laboratory of BiochemistryHellenic Pasteur Institute127 Vas. Sofias Ave.GR-115 21AthensGreece
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15
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Mahmudov KT, Pombeiro AJL. Resonance-Assisted Hydrogen Bonding as a Driving Force in Synthesis and a Synthon in the Design of Materials. Chemistry 2016; 22:16356-16398. [PMID: 27492126 DOI: 10.1002/chem.201601766] [Citation(s) in RCA: 101] [Impact Index Per Article: 12.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/14/2016] [Indexed: 11/08/2022]
Abstract
Resonance-assisted hydrogen bonding (RAHB), a concept introduced by Gilli and co-workers in 1989, concerns a kind of intramolecular H-bonding strengthened by a conjugated π-system, usually in 6-, 8-, or 10-membered rings. This Review highlights the involvement of RAHB as a driving force in the synthesis of organic, coordination, and organometallic compounds, as a handy tool in the activation of covalent bonds, and in starting moieties for synthetic transformations. The unique roles of RAHB in molecular recognition and switches, E/Z isomeric resolution, racemization and epimerization of amino acids and chiral amino alcohols, solvatochromism, liquid-crystalline compounds, and in synthons for crystal engineering and polymer materials are also discussed. The Review can provide practical guidance for synthetic chemists that are interested in exploring and further developing RAHB-assisted synthesis and design of materials.
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Affiliation(s)
- Kamran T Mahmudov
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal. .,Department of Chemistry, Baku State University, Z. Xalilov Str. 23, Az 1148, Baku, Azerbaijan.
| | - Armando J L Pombeiro
- Centro de Química Estrutural, Instituto Superior Técnico, Universidade de Lisboa, Av. Rovisco Pais, 1049-001, Lisboa, Portugal.
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16
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Yu M, Zhang Q, Li G, Yuan J, Zhang N, Zhang R, Liang Y, Dong D. Copper-Nitrene Triggered Annulation of α-Acyl Cinnamides: Access to Isoxazol-3(2H
)-ones. Adv Synth Catal 2016. [DOI: 10.1002/adsc.201500990] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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17
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Jiang C, Xiong Z, Jin S, Gao P, Tang Y, Wang Y, Du C, Wang X, Liu Y, Lin B, Liu Y, Cheng M. A Au(i)-catalyzed hydrogen bond-directed tandem strategy to synthesize indeno-chromen-4-one and indeno-quinolin-4-one derivatives. Chem Commun (Camb) 2016; 52:11516-9. [DOI: 10.1039/c6cc05391b] [Citation(s) in RCA: 21] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
Abstract
A gold-catalyzed hydrogen bond-directed tandem cyclization strategy to synthesize indeno-chromen-4-one and indeno-quinolin-4-one derivatives has been developed.
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18
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Patel A, Vella JR, Ma ZX, Hsung RP, Houk KN. Transition State Gauche Effects Control the Torquoselectivities of the Electrocyclizations of Chiral 1-Azatrienes. J Org Chem 2015; 80:11888-94. [PMID: 26435446 PMCID: PMC5555587 DOI: 10.1021/acs.joc.5b02085] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hsung et al. have reported a series of torquoselective electrocyclizations of chiral 1-azahexa-1E,3Z,5E-trienes that yield functionalized dihydropyridines. To understand the origins of the torquoselectivities of these azaelectrocyclizations, we modeled these electrocyclic ring closures using the M06-2X density functional. A new stereochemical model that rationalizes the observed 1,2 stereoinduction emerges from these computations. This model is an improvement and generalization of the "inside-alkoxy" model used to rationalize stereoselectivities of the 1,3-dipolar cycloaddition of chiral allyl ethers and emphasizes a stabilizing hyperconjugative effect, which we have termed a transition state gauche effect. This stereoelectronic effect controls the conformational preferences at the electrocyclization transition states, and only in one of the allowed disrotatory electrocyclization transition states is the ideal stereoelectronic arrangement achieved without the introduction of a steric clash. Computational experiments confirm the role of this effect as a stereodeterminant since substrates with electropositive groups and electronegative groups have different conformational preferences at the transition state and undergo ring closure with divergent stereochemical outcomes. This predicted reversal of stereoselectivity for the ring closures of several silyl substituted azatrienes have been demonstrated experimentally.
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Affiliation(s)
| | | | - Zhi-Xiong Ma
- Division of Pharmaceutical Sciences, School of Pharmacy, and Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53705, United States
| | - R P Hsung
- Division of Pharmaceutical Sciences, School of Pharmacy, and Department of Chemistry, University of Wisconsin , Madison, Wisconsin 53705, United States
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19
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Zhang YL, Li YF, Yu B, Shan LH, Liu HM. Recent Progress on the Synthesis and Bioactivity of Marine Naturally Occurring Dienamides and Related Derivatives. SYNTHETIC COMMUN 2015. [DOI: 10.1080/00397911.2015.1038753] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Affiliation(s)
- Yan-Ling Zhang
- School of Pharmaceutical Sciences and New Drug Research and Development Center, Zhengzhou University, Zhengzhou, China
- College of Chemistry and Chemical Engineering, Xuchang University, Xuchang, Henan Province, China
| | - Ya-Fei Li
- School of Pharmaceutical Sciences and New Drug Research and Development Center, Zhengzhou University, Zhengzhou, China
| | - Bin Yu
- School of Pharmaceutical Sciences and New Drug Research and Development Center, Zhengzhou University, Zhengzhou, China
| | - Li-Hong Shan
- School of Pharmaceutical Sciences and New Drug Research and Development Center, Zhengzhou University, Zhengzhou, China
| | - Hong-Min Liu
- School of Pharmaceutical Sciences and New Drug Research and Development Center, Zhengzhou University, Zhengzhou, China
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20
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Cai Q, Yang Y, Li DK, Jia FC, Xu C, Wu AX. CuO/I2-mediated intramolecular annulation for the synthesis of 2-aroyl-3-hydroxy-4-iodonaphthalenes. RSC Adv 2015. [DOI: 10.1039/c5ra17651d] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
A novel method for the direct synthesis of 2-aroyl-3-hydroxy-4-iodonaphthalenes has been developed via CuO/I2-mediated domino reactions.
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Affiliation(s)
- Qun Cai
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Yan Yang
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Deng-Kui Li
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Feng-Cheng Jia
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - Cheng Xu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
| | - An-Xin Wu
- Key Laboratory of Pesticide & Chemical Biology
- Ministry of Education
- College of Chemistry
- Central China Normal University
- Wuhan 430079
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21
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An efficient synthesis of 3,4-dihydropyridone via a tandem olefin isomerization–ring-closing metathesis reaction. Tetrahedron Lett 2014. [DOI: 10.1016/j.tetlet.2014.08.025] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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22
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Xin X, Zhang Q, Liang Y, Zhang R, Dong D. Tandem halogenation/Michael-initiated ring-closing reaction of α,β-unsaturated nitriles and activated methylene compounds: one-pot diastereoselective synthesis of functionalized cyclopropanes. Org Biomol Chem 2014; 12:2427-35. [PMID: 24599326 DOI: 10.1039/c4ob00087k] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
Abstract
An efficient one-pot synthetic route to highly substituted cyclopropanes has been developed from readily available α,β-unsaturated nitriles and doubly activated methylene compounds under very mild conditions in a highly diastereoselective manner, which involves halogenation, Michael addition and intramolecular ring-closing reaction sequences.
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Affiliation(s)
- Xiaoqing Xin
- Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun, 130022, China.
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23
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Zhou F, Zhang N, Xin X, Zhang X, Liang Y, Zhang R, Dong D. Synthesis of multi-substituted 4-aminopyridines via ring-opening and recyclization reactions of 2-iminopyridines. RSC Adv 2014. [DOI: 10.1039/c4ra02428a] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Synthesis of multi-substituted 4-aminopyridines is developed via a regioselective ring-opening reaction of 2-iminopyridines followed by a 6π-azaelectrocyclization and N-to-N 1,3-sulfonyl group migration process.
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Affiliation(s)
- Fenguo Zhou
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
- School of Chemistry and Environmental Engineering
- Changchun University of Science and Technology
| | - Ning Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Xiaoqing Xin
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Xun Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Yongjiu Liang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Rui Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
| | - Dewen Dong
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun 130022, China
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24
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Liu X, Zhang Q, Xin X, Zhang R, Zhang N, Liang Y, Dong D. BF3·Et2O-mediated intramolecular cyclization of unsaturated amides: convenient synthesis of dihydroquinolin-2-one-BF2 complexes. RSC Adv 2014. [DOI: 10.1039/c4ra06151a] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023] Open
Abstract
A facile and efficient synthesis of substituted dihydropyridone–BF2 complexes is developed via intramolecular cyclization of α-acyl acrylamides and α-acyl cinnamamides mediated by BF3·Et2O, respectively.
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Affiliation(s)
- Xu Liu
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Qian Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Xiaoqing Xin
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Rui Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Ning Zhang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Yongjiu Liang
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
| | - Dewen Dong
- Changchun Institute of Applied Chemistry
- Chinese Academy of Sciences
- Changchun, China
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25
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Liu B, Wei E, Lin S, Zhao B, Liang F. Synthesis of spiro[isoquinolinone-4,2′-oxiranes] and isoindolinones via a multicomponent reaction of 2-acetyl-oxirane-2-carboxamides, arylaldehydes and malononitrile. Chem Commun (Camb) 2014; 50:6995-7. [DOI: 10.1039/c4cc02141j] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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26
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Lin S, Li L, Liang F, Liu Q. DABCO-catalyzed ring opening of activated cyclopropanes and recyclization leading to γ-lactams with an all-carbon quaternary center. Chem Commun (Camb) 2014; 50:10491-4. [DOI: 10.1039/c4cc03392b] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
A novel and efficient method for the construction of γ-lactams with an all-carbon quaternary center is developed via a DABCO-catalyzed reaction of EWG-activated cyclopropanecarboxamides and electron-deficient alkenes.
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Affiliation(s)
- Shaoxia Lin
- Department of Chemistry
- Northeast Normal University
- Changchun 130024, China
| | - Ling Li
- Department of Chemistry
- Northeast Normal University
- Changchun 130024, China
| | - Fushun Liang
- Department of Chemistry
- Northeast Normal University
- Changchun 130024, China
- Key Laboratory for UV-Emitting Materials and Technology of Ministry of Education
- Northeast Normal University
| | - Qun Liu
- Department of Chemistry
- Northeast Normal University
- Changchun 130024, China
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27
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Yu B, Sun XN, Shi XJ, Qi PP, Fang Y, Zhang E, Yu DQ, Liu HM. Stereoselective synthesis of novel antiproliferative steroidal (E, E) dienamides through a cascade aldol/cyclization process. Steroids 2013; 78:1134-40. [PMID: 23954522 DOI: 10.1016/j.steroids.2013.08.001] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/17/2013] [Revised: 07/27/2013] [Accepted: 08/01/2013] [Indexed: 11/20/2022]
Abstract
The stereoselective and metal-free protocol involving a cascade aldol/cyclization process for the synthesis of steroidal (E, E) dienamides from steroidal α, α-dicyanoalkene was reported. This protocol efficiently achieved the construction of C=C bond and selective conversion of cyano group into carboxamide in one-pot procedure under mild condition. Further biological evaluation showed that some of these compounds had moderate to excellent cytotoxic activities against all the tested cancer cell lines and were more potent than well-known drug 5-fluorouracil. Particularly, compound 3c represented excellent inhibitory effect against MCF-7 (IC50=0.76 μM), which was about 10-fold more potent than 5-fluorouracil.
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Affiliation(s)
- Bin Yu
- School of Pharmaceutical Sciences and New Drug Research & Development Center, Zhengzhou University, Zhengzhou 450001, PR China
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28
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Efficient construction of novel D-ring modified steroidal dienamides and their cytotoxic activities. Eur J Med Chem 2013; 66:171-9. [DOI: 10.1016/j.ejmech.2013.05.035] [Citation(s) in RCA: 27] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2013] [Revised: 05/14/2013] [Accepted: 05/25/2013] [Indexed: 01/04/2023]
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