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Yuan PF, Yang Z, Zhang SS, Zhu CM, Yang XL, Meng QY. Deconstructive Carboxylation of Activated Alkenes with Carbon Dioxide. Angew Chem Int Ed Engl 2023:e202313030. [PMID: 38072915 DOI: 10.1002/anie.202313030] [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] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/04/2023] [Indexed: 12/22/2023]
Abstract
Carboxylation with carbon dioxide (CO2 ) represents one notable methodology to produce carboxylic acids. In contrast to carbon-heteroatom bonds, carbon-carbon bond cleavage for carboxylation with CO2 is far more challenging due to their inherent and less favorable orbital directionality for interacting with transition metals. Here we report a photocatalytic protocol for the deconstructive carboxylation of alkenes with CO2 to generate carboxylic acids in the absence of transition metals. It is emphasized that our protocol provides carboxylic acids with obviously unchanged carbon numbers when terminal alkenes were used. To show the power of this strategy, a variety of pharmaceutically relevant applications including the modular synthesis of propionate nonsteroidal anti-inflammatory drugs and the late-stage carboxylation of bioactive molecule derivatives are demonstrated.
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Affiliation(s)
- Pan-Feng Yuan
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P. R., China
| | - Zhao Yang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P. R., China
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, P. R. China
| | - Shan-Shan Zhang
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P. R., China
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, P. R. China
| | - Can-Ming Zhu
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P. R., China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
| | - Xiu-Long Yang
- Key Laboratory of Chemical Biology of Hebei Province, Key Laboratory of Medicinal Chemistry and Molecular Diagnosis of the Ministry of Education and College of Chemistry and Environmental Science, Hebei University, Baoding, 071002, P. R. China
| | - Qing-Yuan Meng
- Beijing National Laboratory for Molecular Sciences, CAS Key Laboratory of Molecular Recognition and Function, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190 (P. R., China
- University of Chinese Academy of Sciences, Beijing, 100049, P. R. China
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2
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Abstract
The 2,3-dihydrobenzofuran scaffold is widely found in natural products and biologically active compounds. Herein, dearomatizing 2,3-fluoroaroylation of benzofurans with aroyl fluorides as bifunctional reagents to access 2,3-difunctionalized dihydrobenzofurans is reported. The reaction that occurs by cooperative NHC/photoredox catalysis provides 3-aroyl-2-fluoro-2,3-dihydrobenzofurans with moderate to good yield and high diastereoselectivity. Cascades proceed via radical/radical cross-coupling of a benzofuran radical cation generated in the photoredox catalysis cycle with a neutral ketyl radical formed through the NHC catalysis cycle. The redox-neutral transformation exhibits broad substrate scope and high functional group compatibility. With anhydrides as bifunctional reagents, dearomatizing aroyloxyacylation of benzofurans is achieved and the strategy can also be applied to N-acylated indoles to afford 3-aroyl-2-fluoro-dihydroindoles.
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Affiliation(s)
- Xiaoye Yu
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
| | - Qing-Yuan Meng
- Institute of Chemistry, Chinese Academy of Sciences (CAS), Laboratory of Molecular Recognition and Function, 100190 Beijing, China
| | - Constantin G Daniliuc
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Corrensstraße 40, 48149 Münster, Germany
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3
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Zhu PY, Meng QY, Liu JT, Sun MM, Yu TY, Wang DY, Sun ST. [Essence of SUN Shen-tian's clinical features on acupuncture and moxibustion]. Zhongguo Zhen Jiu 2022; 42:75-78. [PMID: 35025161 DOI: 10.13703/j.0255-2930.20210406-k0008] [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] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
To summarize SUN Shen-tian's treatment ideas and clinical features. SUN applies meridian syndrome differentiation to the diagnosis and treatment of diseases; advocates that prevention and treatment of diseases should be regulated mind firstly; applies transcranial repetitive acupuncture combined modern cerebral cortex function positioning; emphasizes the application of multiple acupuncture methods and manipulation, and includes the meridian penetrating needling method, the flat needling and penetrating needling method, and the stagnant needle lifting method, pays attention to the importance of achieving qi and manipulation for the effect.
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Affiliation(s)
- Peng-Yu Zhu
- Second Affiliated Hospital of Heilongjiang University of CM, Harbin 150001, China
| | | | | | | | | | - Dong-Yan Wang
- Second Affiliated Hospital of Heilongjiang University of CM, Harbin 150001, China
| | - Shen-Tian Sun
- Second Affiliated Hospital of Heilongjiang University of CM, Harbin 150001, China
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4
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Abstract
Methods that enable site selective acylation of sp3 C-H bonds in complex organic molecules are not well explored, particularly if compared with analogous transformations of aromatic and vinylic sp2 C-H bonds. We report herein a direct acylation of benzylic C-H bonds by merging N-heterocyclic carbene (NHC) and photoredox catalysis. The method allows the preparation of a diverse range of benzylic ketones with good functional group tolerance under mild conditions. The reaction can be used to install acyl groups on highly functionalized natural product derived compounds and the C-H functionalization works with excellent site selectivity. The combination of NHC and photoredox catalysis offers options in preparing benzyl aryl ketones.
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Affiliation(s)
- Qing-Yuan Meng
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Münster, Germany
| | - Lena Lezius
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Münster, Germany
| | - Armido Studer
- Organisch-Chemisches Institut, Westfälische Wilhelms-Universität, Münster, Germany.
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5
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Meng QY, Peng J, Ma SM, Fan HN. [Progress of researches on the use of ultrasound in the diagnosis and treatment of hepatic alveolar echinococcosis]. Zhongguo Xue Xi Chong Bing Fang Zhi Za Zhi 2020; 32:657-660. [PMID: 33325207 DOI: 10.16250/j.32.1374.2020055] [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] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/27/2022]
Abstract
The patients with hepatic alveolar echinococcosis have unapparent early symptoms due to invasive and slow growth, and the disease is usually at an advanced stage upon diagnosis, which has a poor prognosis. Early diagnosis of hepatic alveolar echinococcosis is therefore of great importance. The advances in the ultrasound techniques continues to improve the accuracy for the diagnosis of hepatic alveolar echinococcosis, and ultrasound plays a critical role in the treatment and assessment of therapeutic efficacy for hepatic alveolar echinococcosis. This paper mainly reviews the application of ultrasound in the diagnosis and treatment of hepatic alveolar echinococcosis.
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Affiliation(s)
- Q Y Meng
- Department of Ultrasound, The Affiliated Hospital of Qinghai University, Xining 810000, China
| | - J Peng
- Department of Ultrasound, The First Affiliated Hospital of Dalian Medical University, China
| | - S M Ma
- Department of Ultrasound, The Affiliated Hospital of Qinghai University, Xining 810000, China
| | - H N Fan
- Department of Hepatopancreatobiliary Surgery, The Affiliated Hospital of Qinghai University, Qinghai Provincial Key Laboratory for Echinococcosis Research, China
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6
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Ren T, Wu YQ, Han YT, Meng QY, Li LM. [Analysis of online education for public health and preventive medicine]. Zhonghua Yu Fang Yi Xue Za Zhi 2020; 54:1484-1486. [PMID: 33333673 DOI: 10.3760/cma.j.cn112150-20200511-00713] [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] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Since the outbreak of the Coronavirus Disease 2019 (COVID-19), universities have carried out online education for public health and preventive medicine courses under the policy of "Suspending Classes Without Stopping Learning" launched by the Chinese government. The Public Health and Preventive Medicine Committee of the Ministry of Education Steering Committee for Medical Education investigated the online teaching activities in the member universities. This study presents the survey results, discusses the existing problems, and proposes suggestions for further reforms on mixed teaching activities.
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Affiliation(s)
- T Ren
- School of Public Health, Peking University, Beijing 100191, China
| | - Y Q Wu
- School of Public Health, Peking University, Beijing 100191, China
| | - Y T Han
- School of Public Health, Peking University, Beijing 100191, China
| | - Q Y Meng
- School of Public Health, Peking University, Beijing 100191, China
| | - L M Li
- School of Public Health, Peking University, Beijing 100191, China
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7
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Tan SJ, Jiang Y, Xi QL, Meng QY, Zhuang QL, Han YS, Wu GH. [Meta-analysis of laparoscopic versus open surgery for palliative resection of the primary tumor in stage IV colorectal cancer]. Zhonghua Wei Chang Wai Ke Za Zhi 2020; 23:589-596. [PMID: 32521980 DOI: 10.3760/cma.j.cn.441530-20190619-00247] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To systematically evaluate the safety and efficacy of laparoscopic versus open surgery for palliative resection of the primary tumor in stage IV colorectal cancer. Methods: The databases of CNKI, Wanfang, VIP, PubMed, EMBASE and Cochrane Library were searched to retrieve randomized controlled trials (RCT) or clinical controlled trials (CCT) comparing laparoscopic surgery with open surgery for palliative resection of the primary tumor in stage IV colorectal cancer published from January 1991 to May 2019. Chinese search terms included "colorectum/colon/rectum" , "cancer/malignant tumor" , "laparoscopy" , "metastasis" , " IV" ; English search terms included "laparoscop*" , "colo*" , "rect*" , "cancer/tumor/carcinoma/neoplasm" , " IV" , "metasta*" . Inclusion criteria: (1) RCT or CCT, with or without allocation concealment or blinding; (2) patients with stage IV colorectal cancer that was diagnosed preoperatively and would receive resection of the primary tumor; (3) the primary tumor that was palliatively resected by laparoscopic or open procedure. Exclusion criteria: (1) no valid data available in the literature; (2) single study sample size ≤20; (3) subjects with colorectal benign disease; (4) metastatic resection or lymph node dissection was performed intraoperatively in an attempt to perform radical surgery; (5) duplicate publication of the literature. Two researchers independently evaluated the quality of the included studies. In case of disagreement, the evaluation was performed by discussion or a third researcher was invited to participate. The data were extracted from the included studies, and the Cochrane Collaboration RevMan 5.1.0 version software was used for this meta-analysis. Results: Four CCTs with a total of 864 patients were included in this study, including 216 patients in the laparoscopic group and 648 patients in the open group. Compared with the open group, except for longer operation time (WMD=37.60, 95% CI: 26.11 to 49.08, P<0.05), laparoscopic group had less intraoperative blood loss (WMD=-74.89, 95% CI: -144.78 to -5.00, P<0.05), earlier first flatus and food intake after surgery (WMD=-1.00, 95% CI: -1.12 to -0.87, P<0.05; WMD=-1.61, 95%CI: -2.16 to -1.06, P<0.05), shorter hospital stay (WMD=-2.01, 95% CI: -2.21 to -1.80, P<0.05) and lower morbidity of postoperative complication (OR=0.52, 95% CI: 0.35 to 0.77, P<0.05). However, no significant differences were found in time to start postoperative chemotherapy, postoperative chemotherapy rate, and mortality (P > all 0.05). Conclusion: Laparoscopic surgery for palliative resection of the primary tumor is safe and feasible to enhance recovery after surgery by promoting postoperative bowel function recovery, shortening hospital stay and reducing postoperative complication in stage IV colorectal cancer.
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Affiliation(s)
- S J Tan
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y Jiang
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q L Xi
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q Y Meng
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Q L Zhuang
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - Y S Han
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
| | - G H Wu
- Department of General Surgery, Shanghai Clinical Nutrition Research Center, Zhongshan Hospital, Fudan University, Shanghai 200032, China
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8
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Meng QY, Cong HL, Hu H, Xu FJ. Rational design and latest advances of codelivery systems for cancer therapy. Mater Today Bio 2020; 7:100056. [PMID: 32510051 PMCID: PMC7264083 DOI: 10.1016/j.mtbio.2020.100056] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [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: 04/01/2020] [Revised: 04/25/2020] [Accepted: 04/29/2020] [Indexed: 01/06/2023] Open
Abstract
Current treatments have limited effectiveness in treating tumors. The combination of multiple drugs or treatment strategies is widely studied to improve therapeutic effect and reduce adverse effects of cancer therapy. The codelivery system is the key to realize combined therapies. It is necessary to design and construct different codelivery systems in accordance with the variable structures and properties of cargoes and vectors. This review presented the typical design considerations about codelivery vectors for cancer therapy and described the current state of codelivery systems from two aspects: different types of vectors and collaborative treatment strategies. The commonly used loading methods of cargoes into the vectors, including physical and chemical processes, are discussed in detail. Finally, we outline the challenges and perspectives about the improvement of codelivery systems.
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Affiliation(s)
- Q Y Meng
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - H L Cong
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - H Hu
- Institute of Biomedical Materials and Engineering, College of Materials Science and Engineering, Qingdao University, Qingdao, 266071, China
| | - F-J Xu
- Key Lab of Biomedical Materials of Natural Macromolecules (Beijing University of Chemical Technology, Ministry of Education), Beijing Laboratory of Biomedical Materials, Beijing University of Chemical Technology, Beijing, 100029, China
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9
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Li J, Cheng Y, Deng X, Meng QY, Liang JH. [Treatment of vasoproliferative tumors of the retina]. Zhonghua Yan Ke Za Zhi 2020; 56:272-278. [PMID: 32306619 DOI: 10.3760/cma.j.cn112142-20191111-00567] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objective: To evaluate the treatment of vasoproliferative tumors of the retina (VPTR). Methods: Retrospective case series study. The clinical data of 20 VPTR patients (20 eyes) were retrospectively analyzed, including 2 eyes only treated by cryotherapy, 1 eye only treated by photocoagulation and 1 eye only treated by ruthenium-106 brachytherapy. The remaining 16 eyes had combined treatment of ruthenium-106 brachytherapy, photodynamic therapy, anti-VEGF therapy, photocoagulation and cryotherapy. Nine eyes were also treated by vitrectomy because of complications such as retinal detachment and vitreous hemorrhage. Results: Single or multiple yellow white or orange red, highly vascular tumor lesions were found in ocular fundi of the 20 eyes. All eyes were accompanied by complications, including intraretinal and subretinal exudations (100%), macular edema (n=19, 95%), epiretinal membrane (n=4, 20%), retinal detachment (n=8, 40%), vitreous hemorrhage (n=6, 30%), abnormal blood vessels (n=16, 80%) and proliferative membrane (n=7, 35%). In the follow-up, the tumor in the eye treated by ruthenium-106 brachytherapy alone was atrophied and the vision improved. Regarding the 2 eyes treated by cryotherapy alone, macular edema and abnormal blood vessels decreased and visual acuity improved in 1 eye, and visual acuity did not change significantly in another eye. More leakages and increased visual acuity were found in the eye treated by photocoagulation alone. Among the 16 eyes treated with combined therapy, 9 eyes had decreased complications and improved visual acuity, 3 eyes did not change significantly, and 2 eyes had increased complications and decreased visual acuity. Conclusions: The conditions of VPTR are complex and difficult to treat. According to the specific conditions, clinicians should choose appropriate treatment methods; different treatment methods can be combined. Laser photocoagulation and cryotherapy may be chosen to treat small tumors complicated with abnormal blood vessels. Ruthenium-106 brachytherapy could treat big tumors complicated with exudative retinal detachment. Vitreous surgery can be used in hemorrhage and tractional retinal detachment. Anti-VEGF therapy is effective in the treatment of macular edema. (Chin J Ophthalmol, 2020, 56:272-278).
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Affiliation(s)
- J Li
- Department of Ophthalmology, Peking University People's Hospital, Eye diseases and optometry institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China (Li Jing is now working at the Department of Ophthalmology, People's Hospital of Shaanxi, Xi'an 710068, China)
| | - Y Cheng
- Department of Ophthalmology, Peking University People's Hospital, Eye diseases and optometry institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China
| | - X Deng
- Department of Ophthalmology, Peking University People's Hospital, Eye diseases and optometry institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China
| | - Q Y Meng
- Department of Ophthalmology, Peking University People's Hospital, Eye diseases and optometry institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China
| | - J H Liang
- Department of Ophthalmology, Peking University People's Hospital, Eye diseases and optometry institute, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases, College of Optometry, Peking University Health Science Center, Beijing 100044, China
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Meng QY. [Transformation and reform of the functions of centers for disease prevention and control in the new era]. Zhonghua Yu Fang Yi Xue Za Zhi 2019; 53:964-967. [PMID: 31607038 DOI: 10.3760/cma.j.issn.0253-9624.2019.10.002] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
To implement Healthy China 2030 Plan and Healthy China Actions (2019-2030) requires a high quality and efficient public health care system. Centers for disease prevention and control as one of the important components of the public health care system, should be critically transformed and reformed in their functions. Government needs to redefine and enforce the functions and improve assurance mechanisms for the centers to carry out the functions. The centers should strengthen their capacities for the transformed functions.
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Affiliation(s)
- Q Y Meng
- School of Public Health/China Center for Health Development Studies, Peking University, Beijing 100191, China
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11
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Abstract
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The carboxylation of sp3-hybridized C–H bonds
with CO2 is a challenging transformation. Herein, we report
a visible-light-mediated carboxylation of benzylic C–H bonds
with CO2 into 2-arylpropionic acids under metal-free conditions.
Photo-oxidized triisopropylsilanethiol was used as the hydrogen atom
transfer catalyst to afford a benzylic radical that accepts an electron
from the reduced form of 2,3,4,6-tetra(9H-carbazol-9-yl)-5-(1-phenylethyl)benzonitrile
generated in situ. The resulting benzylic carbanion
reacts with CO2 to generate the corresponding carboxylic
acid after protonation. The reaction proceeded without the addition
of any sacrificial electron donor, electron acceptor or stoichiometric
additives. Moderate to good yields of the desired products were obtained
in a broad substrate scope. Several drugs were successfully synthesized
using the novel strategy.
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Affiliation(s)
- Qing-Yuan Meng
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy , University of Regensburg , D-93040 Regensburg , Germany
| | - Tobias E Schirmer
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy , University of Regensburg , D-93040 Regensburg , Germany
| | - Anna Lucia Berger
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy , University of Regensburg , D-93040 Regensburg , Germany
| | - Karsten Donabauer
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy , University of Regensburg , D-93040 Regensburg , Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy , University of Regensburg , D-93040 Regensburg , Germany
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Sahoo B, Bellotti P, Juliá-Hernández F, Meng QY, Crespi S, König B, Martin R. Site-Selective, Remote sp 3 C-H Carboxylation Enabled by the Merger of Photoredox and Nickel Catalysis. Chemistry 2019; 25:9001-9005. [PMID: 31074058 PMCID: PMC6773098 DOI: 10.1002/chem.201902095] [Citation(s) in RCA: 56] [Impact Index Per Article: 11.2] [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: 05/07/2019] [Indexed: 11/15/2022]
Abstract
A photoinduced carboxylation of alkyl halides with CO2 at remote sp3 C−H sites enabled by the merger of photoredox and Ni catalysis is described. This protocol features a predictable reactivity and site selectivity that can be modulated by the ligand backbone. Preliminary studies reinforce a rationale based on a dynamic displacement of the catalyst throughout the alkyl side chain.
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Affiliation(s)
- Basudev Sahoo
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Peter Bellotti
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053, Regensburg, Germany
| | - Francisco Juliá-Hernández
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain
| | - Qing-Yuan Meng
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053, Regensburg, Germany
| | - Stefano Crespi
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053, Regensburg, Germany
| | - Burkhard König
- Institut für Organische Chemie, Universität Regensburg, Universitätstrasse 31, 93053, Regensburg, Germany
| | - Ruben Martin
- Institute of Chemical Research of Catalonia (ICIQ), The Barcelona Institute of Science and Technology, Av. Països Catalans 16, 43007, Tarragona, Spain.,ICREA, Passeig Lluïs Companys, 23, 08010, Barcelona, Spain
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13
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Meng QY, Schirmer TE, Katou K, König B. Controllable Isomerization of Alkenes by Dual Visible-Light-Cobalt Catalysis. Angew Chem Int Ed Engl 2019; 58:5723-5728. [PMID: 30835931 PMCID: PMC6519376 DOI: 10.1002/anie.201900849] [Citation(s) in RCA: 96] [Impact Index Per Article: 19.2] [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: 01/24/2019] [Revised: 03/05/2019] [Indexed: 11/30/2022]
Abstract
We report herein that thermodynamic and kinetic isomerization of alkenes can be accomplished by the combination of visible light with Co catalysis. Utilizing Xantphos as the ligand, the most stable isomers are obtained, while isomerizing terminal alkenes over one position can be selectively controlled by using DPEphos as the ligand. The presence of the donor–acceptor dye 4CzIPN accelerates the reaction further. Transformation of exocyclic alkenes into the corresponding endocyclic products could be efficiently realized by using 4CzIPN and Co(acac)2 in the absence of any additional ligands. Spectroscopic and spectroelectrochemical investigations indicate CoI being involved in the generation of a Co hydride, which subsequently adds to alkenes initiating the isomerization.
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Affiliation(s)
- Qing-Yuan Meng
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Tobias E Schirmer
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Kousuke Katou
- Institute of Transformative Bio-Molecules (WPI-ITbM) and Department of Molecular and Macromolecular Chemistry, Graduate School of Engineering, Nagoya University, Nagoya, 464-8601, Japan
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
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14
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Liu XY, Zhang JR, Yan L, Chen LY, Xu YJ, Wei XT, Wang ZF, Meng QY, Hao WD, Wang HJ. [Study on teaching capacity building of public health]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:322-324. [PMID: 29973017 DOI: 10.3760/cma.j.issn.0253-9624.2018.03.021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- X Y Liu
- School of Public Health, Peking University, Beijing 100191, China
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15
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Wang MY, Su GY, Huang H, Liu DJ, Lyu J, Yu CQ, He PP, Li K, Wu T, Xu YJ, Zhan SY, Hu YH, Li LM, Meng QY. [A descriptive study of massive open online courses in school of public health, Peking University]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:315-317. [PMID: 29973015 DOI: 10.3760/cma.j.issn.0253-9624.2018.03.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- M Y Wang
- School of Public Health, Peking University, Beijing 100191, China
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16
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Shi HF, Wang C, Cai JY, Xu YJ, Wang ZF, Hao WD, Meng QY, Wang XL. [Study on the goal oriented curriculum system of preventive medicine]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:318-321. [PMID: 29973016 DOI: 10.3760/cma.j.issn.0253-9624.2018.03.020] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- H F Shi
- School of Public Health, Peking University, Beijing 100191, China
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17
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Meng QY. [A goal-oriented reform on public health education]. Zhonghua Yu Fang Yi Xue Za Zhi 2018; 52:221-225. [PMID: 29972998 DOI: 10.3760/cma.j.issn.0253-9624.2018.03.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Key Words] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Affiliation(s)
- Q Y Meng
- School of Public Health, Peking University, Beijing 100191, China
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18
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Meng QY, Wang S, Huff GS, König B. Ligand-Controlled Regioselective Hydrocarboxylation of Styrenes with CO2 by Combining Visible Light and Nickel Catalysis. J Am Chem Soc 2018; 140:3198-3201. [DOI: 10.1021/jacs.7b13448] [Citation(s) in RCA: 130] [Impact Index Per Article: 21.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/11/2022]
Affiliation(s)
- Qing-Yuan Meng
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Shun Wang
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Gregory S. Huff
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, D-93040 Regensburg, Germany
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19
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Lei T, Zhou C, Huang MY, Zhao LM, Yang B, Ye C, Xiao H, Meng QY, Ramamurthy V, Tung CH, Wu LZ. General and Efficient Intermolecular [2+2] Photodimerization of Chalcones and Cinnamic Acid Derivatives in Solution through Visible-Light Catalysis. Angew Chem Int Ed Engl 2017; 56:15407-15410. [PMID: 28994229 DOI: 10.1002/anie.201708559] [Citation(s) in RCA: 86] [Impact Index Per Article: 12.3] [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: 08/20/2017] [Indexed: 01/26/2023]
Abstract
[2+2] Photocycloaddition, for example, the dimerization of chalcones and cinnamic acid derivatives, is a unique strategy to construct cyclobutanes, which are building blocks for a variety of biologically active molecules and natural products. However, most attempts at the above [2+2] addition have focused on solid-state, molten-state, or host-guest systems under ultraviolet-light irradiation in order to overcome the competition of facile geometric isomerization of nonrigid olefins. We report a general and simple method to realize the intermolecular [2+2] dimerization reaction of these acyclic olefins to construct cyclobutanes in a highly regio- and diastereoselective manner in solution under visible light, which provides an efficient solution to a long-standing problem.
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Affiliation(s)
- Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Mao-Yong Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Lei-Min Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Bing Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Hongyan Xiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | | | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, The Chinese Academy of Sciences, Beijing, 100190, P. R. China
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20
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Meng QY, Wang S, König B. Carboxylation of Aromatic and Aliphatic Bromides and Triflates with CO2
by Dual Visible-Light-Nickel Catalysis. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201706724] [Citation(s) in RCA: 42] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Qing-Yuan Meng
- Institute of Organic Chemistry; Faculty of Chemistry and Pharmacy; University of Regensburg; 93040 Regensburg Germany
| | - Shun Wang
- Institute of Organic Chemistry; Faculty of Chemistry and Pharmacy; University of Regensburg; 93040 Regensburg Germany
| | - Burkhard König
- Institute of Organic Chemistry; Faculty of Chemistry and Pharmacy; University of Regensburg; 93040 Regensburg Germany
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21
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Meng QY, Wang S, König B. Carboxylation of Aromatic and Aliphatic Bromides and Triflates with CO 2 by Dual Visible-Light-Nickel Catalysis. Angew Chem Int Ed Engl 2017; 56:13426-13430. [PMID: 28834097 DOI: 10.1002/anie.201706724] [Citation(s) in RCA: 143] [Impact Index Per Article: 20.4] [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: 07/02/2017] [Indexed: 11/09/2022]
Abstract
We report the efficient carboxylation of bromides and triflates with K2 CO3 as the source of CO2 in the presence of an organic photocatalyst in combination with a nickel complex under visible light irradiation at room temperature. The reaction is compatible with a variety of functional groups and has been successfully applied to the synthesis and derivatization of biologically active molecules. In particular, the carboxylation of unactivated cyclic alkyl bromides proceeded well with our protocol, thus extending the scope of this transformation. Spectroscopic and spectroelectrochemical investigations indicated the generation of a Ni0 species as a catalytic reactive intermediate.
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Affiliation(s)
- Qing-Yuan Meng
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Shun Wang
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
| | - Burkhard König
- Institute of Organic Chemistry, Faculty of Chemistry and Pharmacy, University of Regensburg, 93040, Regensburg, Germany
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22
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Meng QY, Gao XW, Lei T, Liu Z, Zhan F, Li ZJ, Zhong JJ, Xiao H, Feng K, Chen B, Tao Y, Tung CH, Wu LZ. Identifying key intermediates generated in situ from Cu(II) salt-catalyzed C-H functionalization of aromatic amines under illumination. Sci Adv 2017; 3:e1700666. [PMID: 28875165 PMCID: PMC5573345 DOI: 10.1126/sciadv.1700666] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/07/2017] [Accepted: 08/01/2017] [Indexed: 06/07/2023]
Abstract
Copper compounds involved in photocatalysis have recently spurred considerable interest for their novel transformations. However, mechanistic investigations are still in infancy. We find a new type of reaction, that is, Cu(II) salt-catalyzed C-H functionalization of aromatic amines triggered by visible light irradiation. An array of mechanistic observations, including high-resolution mass spectrometry, ultraviolet-visible absorption spectrum, electron spin resonance, x-ray absorption near-edge structure, and density functional theory calculation, have identified the key intermediates generated in situ in the transformation. Integration of single-electron transfer, singlet oxygen (1O2), and new absorption species, intermediate I and intermediate II formed in situ from Cu(II) salts and substrate amines or imines, respectively, is responsible for the N-H and C-H bond activation of secondary amines to couple with nucleophiles in air, thereby leading to the formation of quinoline, indolo[3,2-c]quinoline, β-amino acid, and 1,4-dihydropyridine derivatives in moderate to good yields under visible light irradiation at room temperature.
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Affiliation(s)
- Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zan Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Fei Zhan
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hongyan Xiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ye Tao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100039, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
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23
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Meng QY, Huang LZ, Wang B, Li XX, Liang JH. [Application of gene capture technology on mutation screening of RB1 gene in retinoblastoma patients]. Zhonghua Yan Ke Za Zhi 2017; 53:455-459. [PMID: 28606269 DOI: 10.3760/cma.j.issn.0412-4081.2017.06.012] [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] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
Objectives: To analyze RB1 gene mutation in retinoblastoma (RB) patients using gene capture technology. Methods: Experimental research. The clinical data of 17 RB patients were collected at Department of Ophthalmology, Peking University People's Hospital from June 2010 to Jun 2014. Peripheral blood samples of seventeen RB patients and their parents were collected and genomic DNA were extracted. DNA library from RB patients was mixed with designed gene capture probe of RB1 exons and its flanking sequences. The data were analyzed using bioinformatics software. To avoid the false positive, the abnormal sites were verified using the Sanger sequencing method. Results: Totally, there were 17 RB patients, including 12 males and 5 females, from 0.5 to 23 years old, average ages were (3.2±5.2) years old. Both eyes were involved in 6 patients. The other 11 cases were only one eye was attacked. Four RB patients were found to have germline mutations, among whom 2 had bilateral tumors and 2 had unilateral tumors. 2 novel missense mutations were identified, including 15(th) exon c.1408A>T (p. Ile470Phe) and c.1960G>C (p. Val654Leu) at 19(th) exon. No RB1 mutation was identified in any of their parents. We also identified 2 mutations reported previously. One is c.1030C>T termination mutation at 10(th) exon in a bilateral RB patients and his father, who was diagnosed with unilateral RB. The other is c.371-372delTA frame shift mutation at 3(rd) exon. No mutation was found in their parents. Conclusions: Two novel germline RB1 mutations were found using gene capture technology, which enriched RB1 mutations library.(Chin J Ophthalmol, 2017, 53: 455-459).
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Affiliation(s)
- Q Y Meng
- Peking University People's Hospital, Ophthalmology Department, Key Laboratory of Vision Loss and Restoration Ministry of Education, Beijing Key Laboratory of Diagnosis and Therapy of Retinal and Choroid Diseases , Beijing 100044 , China
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24
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Yu TT, Cui FZ, Meng QY, Wang J, Wu DC, Zhang J, Kou XX, Yang RL, Liu Y, Zhang YS, Yang F, Zhou YH. Influence of Surface Chemistry on Adhesion and Osteo/Odontogenic Differentiation of Dental Pulp Stem Cells. ACS Biomater Sci Eng 2017; 3:1119-1128. [PMID: 33429586 DOI: 10.1021/acsbiomaterials.7b00274] [Citation(s) in RCA: 31] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023]
Affiliation(s)
- Ting-Ting Yu
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Fu-Zhai Cui
- School
of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Qing-Yuan Meng
- School
of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China
| | - Juan Wang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - De-Cheng Wu
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Jin Zhang
- Division
of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
| | - Xiao-Xing Kou
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Rui-Li Yang
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yan Liu
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
| | - Yu Shrike Zhang
- Division
of Engineering in Medicine, Department of Medicine, Brigham and Women’s Hospital, Harvard Medical School, Cambridge, Massachusetts 02139, United States
| | - Fei Yang
- Beijing National Laboratory for Molecular Sciences, State Key Laboratory of Polymer Physics & Chemistry, Institute of Chemistry, Chinese Academy of Sciences, Beijing 100190, P. R. China
- University of Chinese Academy of Sciences, Beijing 100049, P. R. China
| | - Yan-Heng Zhou
- Center
for Craniofacial Stem Cell Research and Regeneration, Department of
Orthodontics, Peking University School and Hospital of Stomatology, Beijing 100081, P. R. China
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25
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Zheng YW, Ye P, Chen B, Meng QY, Feng K, Wang W, Wu LZ, Tung CH. Benzene C-H Etherification via Photocatalytic Hydrogen-Evolution Cross-Coupling Reaction. Org Lett 2017; 19:2206-2209. [PMID: 28409933 DOI: 10.1021/acs.orglett.7b00463] [Citation(s) in RCA: 47] [Impact Index Per Article: 6.7] [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
Aryl ethers can be constructed from the direct coupling between the benzene C-H bond and the alcohol O-H bond with the evolution of hydrogen via the synergistic merger of photocatalysis and cobalt catalysis. Utilizing the dual catalyst system consisting of 3-cyano-1-methylquinolinum photocatalyst and cobaloxime, intermolecular etherification of arenes with various alcohols and intramolecular alkoxylation of 3-phenylpropanols with formation of chromanes are accomplished. These reactions proceed at remarkably mild conditions, and the sole byproduct is equivalent hydrogen gas.
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Affiliation(s)
- Yi-Wen Zheng
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, PR China.,Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
| | - Pan Ye
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, PR China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
| | - Wenguang Wang
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, PR China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
| | - Chen-Ho Tung
- Key Laboratory of Colloid and Interface Chemistry of Ministry of Education, School of Chemistry and Chemical Engineering, Shandong University , Jinan 250100, PR China.,Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, PR China
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26
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Zhao LM, Meng QY, Fan XB, Ye C, Li XB, Chen B, Ramamurthy V, Tung CH, Wu LZ. Photocatalysis with Quantum Dots and Visible Light: Selective and Efficient Oxidation of Alcohols to Carbonyl Compounds through a Radical Relay Process in Water. Angew Chem Int Ed Engl 2017; 56:3020-3024. [DOI: 10.1002/anie.201700243] [Citation(s) in RCA: 114] [Impact Index Per Article: 16.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/09/2017] [Indexed: 12/19/2022]
Affiliation(s)
- Lei-Min Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Xiang-Bing Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Xu-Bing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | | | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
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27
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Zhao LM, Meng QY, Fan XB, Ye C, Li XB, Chen B, Ramamurthy V, Tung CH, Wu LZ. Photocatalysis with Quantum Dots and Visible Light: Selective and Efficient Oxidation of Alcohols to Carbonyl Compounds through a Radical Relay Process in Water. Angew Chem Int Ed Engl 2017. [DOI: 10.1002/ange.201700243] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Affiliation(s)
- Lei-Min Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Xiang-Bing Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Chen Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Xu-Bing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | | | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials; Technical Institute of Physics and Chemistry & Graduate University the Chinese Academy of Sciences, The Chinese Academy of Sciences; Beijing 100190 P.R. China
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28
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Zhong JJ, Meng QY, Chen B, Tung CH, Wu LZ. Visible Light Induced Cross-Coupling Hydrogen Evolution Reactions. Acta Chim Sinica 2017. [DOI: 10.6023/a16090491] [Citation(s) in RCA: 25] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
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29
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Wu CJ, Cao WX, Lei T, Li ZH, Meng QY, Yang XL, Chen B, Ramamurthy V, Tung CH, Wu LZ. A sustainable synthesis of 2-aryl-3-carboxylate indolines from N-aryl enamines under visible light irradiation. Chem Commun (Camb) 2017; 53:8320-8323. [DOI: 10.1039/c7cc04358a] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Abstract
With visible light irradiation of a catalytic amount of Ir(ppy)3 at room temperature, a number of N-aryl enamines were transformed into their corresponding indoline products in good to excellent yields without requiring any extra additives.
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Affiliation(s)
- Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Wen-Xiao Cao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Zhi-Hua Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Xiu-Long Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | | | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- the Chinese Academy of Sciences
- Beijing
- P. R. China
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30
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Li ZJ, Zhan F, Xiao H, Zhang X, Kong QY, Fan XB, Liu WQ, Huang MY, Huang C, Gao YJ, Li XB, Meng QY, Feng K, Chen B, Tung CH, Zhao HF, Tao Y, Wu LZ. Tracking Co(I) Intermediate in Operando in Photocatalytic Hydrogen Evolution by X-ray Transient Absorption Spectroscopy and DFT Calculation. J Phys Chem Lett 2016; 7:5253-5258. [PMID: 27973864 DOI: 10.1021/acs.jpclett.6b02479] [Citation(s) in RCA: 30] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
X-ray transient absorption spectroscopy (XTA) and optical transient spectroscopy (OTA) were used to probe the Co(I) intermediate generated in situ from an aqueous photocatalytic hydrogen evolution system, with [RuII(bpy)3]Cl2·6H2O as the photosensitizer, ascorbic acid/ascorbate as the electron donor, and the Co-polypyridyl complex ([CoII(DPA-Bpy)Cl]Cl) as the precatalyst. Upon exposure to light, the XTA measured at Co K-edge visualizes the grow and decay of the Co(I) intermediate, and reveals its Co-N bond contraction of 0.09 ± 0.03 Å. Density functional theory (DFT) calculations support the bond contraction and illustrate that the metal-to-ligand π back-bonding greatly stabilizes the penta-coordinated Co(I) intermediate, which provides easy photon access. To the best of our knowledge, this is the first example of capturing the penta-coordinated Co(I) intermediate in operando with bond contraction by XTA, thereby providing new insights for fundamental understanding of structure-function relationship of cobalt-based molecular catalysts.
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Affiliation(s)
- Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Fei Zhan
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Hongyan Xiao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Xiaoyi Zhang
- X-ray Sciences Division, Advanced Photon Source, Argonne National Laboratory , Argonne, Illinois 60430, United States
| | - Qing-Yu Kong
- Synchrotron SOLEIL, L'Orme des Merisiers , Saint Aubin 91192 GIF-sur-Yvette Cedex, France
| | - Xiang-Bing Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Wen-Qiang Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Mao-Yong Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Cheng Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Yu-Ji Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Xu-Bing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
| | - Hai-Feng Zhao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Ye Tao
- Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences , Beijing 100049, People's Republic of China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry, The Chinese Academy of Sciences , Beijing 100190, People's Republic of China
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31
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Zheng YW, Chen B, Ye P, Feng K, Wang W, Meng QY, Wu LZ, Tung CH. Photocatalytic Hydrogen-Evolution Cross-Couplings: Benzene C–H Amination and Hydroxylation. J Am Chem Soc 2016; 138:10080-3. [DOI: 10.1021/jacs.6b05498] [Citation(s) in RCA: 220] [Impact Index Per Article: 27.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Affiliation(s)
- Yi-Wen Zheng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
- Key
Laboratory of Colloid and Interface Chemistry of Ministry of Education,
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Pan Ye
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
- Key
Laboratory of Colloid and Interface Chemistry of Ministry of Education,
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Wenguang Wang
- Key
Laboratory of Colloid and Interface Chemistry of Ministry of Education,
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P.R. China
- Key
Laboratory of Colloid and Interface Chemistry of Ministry of Education,
School of Chemistry and Chemical Engineering, Shandong University, Jinan 250100, P.R. China
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32
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Fan XW, Lei T, Zhou C, Meng QY, Chen B, Tung CH, Wu LZ. Radical Addition of Hydrazones by α-Bromo Ketones To Prepare 1,3,5-Trisubstituted Pyrazoles via Visible Light Catalysis. J Org Chem 2016; 81:7127-33. [PMID: 27362866 DOI: 10.1021/acs.joc.6b00992] [Citation(s) in RCA: 45] [Impact Index Per Article: 5.6] [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
A novel efficient tandem reaction of hydrazones and α-bromo ketones is reported for the preparation of 1,3,5-trisubstituted pyrazoles by visible light catalysis. In this system, the monosubstituted hydrazones show wonderful reaction activity with alkyl radicals, generated from α-bromo ketones. A radical addition followed by intramolecular cyclization affords the important pyrazole skeleton in good to excellent yields. This efficient strategy under mild conditions with wide group tolerance provides a potential approach to the 1,3,5-trisubstituted pyrazoles.
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Affiliation(s)
- Xiu-Wei Fan
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Chao Zhou
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry and University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, P. R. China
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33
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Wu CJ, Meng QY, Lei T, Zhong JJ, Liu WQ, Zhao LM, Li ZJ, Chen B, Tung CH, Wu LZ. An Oxidant-Free Strategy for Indole Synthesis via Intramolecular C–C Bond Construction under Visible Light Irradiation: Cross-Coupling Hydrogen Evolution Reaction. ACS Catal 2016. [DOI: 10.1021/acscatal.6b00917] [Citation(s) in RCA: 88] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Affiliation(s)
- Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Wen-Qiang Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Lei-Min Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing, 100190, People’s Republic of China
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34
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Qiao SP, Zhao YF, Li CF, Yin YB, Meng QY, Lin FH, Liu Y, Hou XL, Guo K, Chen XB, Tian WM. An alginate-based platform for cancer stem cell research. Acta Biomater 2016; 37:83-92. [PMID: 27109764 DOI: 10.1016/j.actbio.2016.04.032] [Citation(s) in RCA: 31] [Impact Index Per Article: 3.9] [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: 11/03/2015] [Revised: 04/14/2016] [Accepted: 04/18/2016] [Indexed: 12/14/2022]
Abstract
UNLABELLED As the primary determinants of the clinical behaviors of human cancers, the discovery of cancer stem cells (CSCs) represents an ideal target for novel anti-cancer therapies (Kievit et al., 2014). Notably, CSCs are difficult to propagate in vitro, which severely restricts the study of CSC biology and the development of therapeutic agents. Emerging evidence indicates that CSCs rely on a niche that controls their differentiation and proliferation, as is the case with normal stem cells (NSCs). Replicating the in vivo CSC microenvironment in vitro using three-dimensional (3D) porous scaffolds can provide means to effectively generate CSCs, thus enabling the discovery of CSC biology. This paper presents our study on a novel alginate-based platform for mimicking the CSC niche to promote CSC proliferation and enrichment. In this study, we used a versatile mouse 4T1 breast cancer model to independently evaluate the matrix parameters of a CSC niche - including the material's mechanical properties, cytokine immobilization, and the composition of the extracellular matrix's (ECM's) molecular impact - on CSC proliferation and enrichment. On this basis, the optimal stiffness and concentration of hyaluronic acid (HA), as well as epidermal growth factor and basic fibroblast growth factor immobilization, were identified to establish the platform for mimicking the 4T1 breast CSCs (4T1 CSCs) niche. The 4T1 CSCs obtained from the platform show increased expression of the genes involved in breast CSC and NSC, as compared to general 2D or 3D culture, and 4T1 CSCs were also demonstrated to have the ability to quickly form a subcutaneous tumor in homologous Balb/c mice in vivo. In addition, the platform can be adjusted according to different parameters for CSC screening. Our results indicate that our platform offers a simple and efficient means to isolate and enrich CSCs in vitro, which can help researchers better understand CSC biology and thus develop more effective therapeutic agents to treat cancer. STATEMENT OF SIGNIFICANCE As the primary determinants of the clinical behaviors of human cancers, the discovery of cancer stem cells (CSCs) represents an ideal target for novel anti-cancer therapies. However, CSCs are difficult to propagate in vitro, which severely restricts the study of CSC biology and the development of therapeutic agents. Emerging evidence indicates that CSCs rely on a niche that controls their differentiation and proliferation, as is the case with normal stem cells (NSCs). Replicating the in vivo CSC microenvironment in vitro using three-dimensional (3D) porous scaffolds can provide means to effectively generate CSCs, thus enabling the discovery of CSC biology. In our study, a novel alginate-based platform were developed for mimicking the CSC niche to promote CSC proliferation and enrichment.
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Affiliation(s)
- Shu-Pei Qiao
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Yu-Fang Zhao
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Chun-Feng Li
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Yan-Bin Yin
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Qing-Yuan Meng
- State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, PR China
| | - Feng-Huei Lin
- Division of Biomedical Engineering and Nanomedicine Research, National Health Research Institutes, Miaoli, Taiwan, ROC; Institute of Biomedical Engineering, College of Medicine and College of Engineering, National Taiwan University, Taipei, Taiwan, ROC
| | - Yi Liu
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Xiao-Lu Hou
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Kai Guo
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China
| | - Xiong-Biao Chen
- Division of Biomedical Engineering, University of Saskatchewan, Saskatoon, Canada; Department of Mechanical Engineering, University of Saskatchewan, Saskatoon, Canada
| | - Wei-Ming Tian
- Bio-X Center, School of Life Science and Technology, Harbin Institute of Technology, Harbin 150080, PR China.
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35
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Lei T, Liu WQ, Li J, Huang MY, Yang B, Meng QY, Chen B, Tung CH, Wu LZ. Visible Light Initiated Hantzsch Synthesis of 2,5-Diaryl-Substituted Pyrroles at Ambient Conditions. Org Lett 2016; 18:2479-82. [DOI: 10.1021/acs.orglett.6b01059] [Citation(s) in RCA: 59] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Affiliation(s)
- Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Wen-Qiang Liu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jian Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Mao-Yong Huang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bing Yang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, P. R. China
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36
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Wang J, Feng K, Xie N, Li ZJ, Meng QY, Chen B, Tung CH, Wu LZ. Solution-processable graphenes by covalent functionalization of graphene oxide with polymeric monoamines. Sci China Chem 2016. [DOI: 10.1007/s11426-015-5523-6] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
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37
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Ye P, Wang DH, Chen B, Meng QY, Tung CH, Wu LZ. Visible light catalyzed aromatization of 1,3,5-triaryl-2-pyrazolines by platinum(II) polypyridyl complex under oxidant-free condition. Sci China Chem 2016. [DOI: 10.1007/s11426-016-5554-7] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
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38
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Xiang M, Meng QY, Gao XW, Lei T, Chen B, Tung CH, Wu LZ. Reactivity and mechanistic insight into the cross coupling reaction between isochromans and β-keto esters through C–H bond activation under visible light irradiation. Org Chem Front 2016. [DOI: 10.1039/c5qo00412h] [Citation(s) in RCA: 33] [Impact Index Per Article: 4.1] [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
The formation of a C(sp3)–C(sp3) bond next to an oxygen atom from two different C–H bonds is realized by oxidative photocatalysis.
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Affiliation(s)
- Ming Xiang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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39
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Zhong JJ, Liu Q, Wu CJ, Meng QY, Gao XW, Li ZJ, Chen B, Tung CH, Wu LZ. Combining visible light catalysis and transfer hydrogenation for in situ efficient and selective semihydrogenation of alkynes under ambient conditions. Chem Commun (Camb) 2016; 52:1800-3. [DOI: 10.1039/c5cc08697c] [Citation(s) in RCA: 32] [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: 11/21/2022]
Abstract
By combining visible light catalysis and transfer hydrogenation, we are able to convert a series of alkynes to their corresponding alkenes in high chemical yields.
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Affiliation(s)
- Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Qiang Liu
- State Key Laboratory of Applied Organic Chemistry
- College of Chemistry and Chemical Engineering
- Lanzhou University
- Lanzhou 730000
- P. R. China
| | - Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials
- Technical Institute of Physics and Chemistry & University of the Chinese Academy of Sciences
- Chinese Academy of Sciences
- Beijing 100190
- P. R. China
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40
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Xiang M, Meng QY, Li JX, Zheng YW, Ye C, Li ZJ, Chen B, Tung CH, Wu LZ. Activation of CH Bonds through Oxidant-Free Photoredox Catalysis: Cross-Coupling Hydrogen-Evolution Transformation of Isochromans and β-Keto Esters. Chemistry 2015; 21:18080-4. [DOI: 10.1002/chem.201503361] [Citation(s) in RCA: 82] [Impact Index Per Article: 9.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/25/2015] [Indexed: 12/21/2022]
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41
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Gao XW, Meng QY, Li JX, Zhong JJ, Lei T, Li XB, Tung CH, Wu LZ. Visible Light Catalysis Assisted Site-Specific Functionalization of Amino Acid Derivatives by C–H Bond Activation without Oxidant: Cross-Coupling Hydrogen Evolution Reaction. ACS Catal 2015. [DOI: 10.1021/acscatal.5b00093] [Citation(s) in RCA: 131] [Impact Index Per Article: 14.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Jia-Xin Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Xu-Bing Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences, Beijing 100190, People’s Republic of China
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Wu CJ, Zhong JJ, Meng QY, Lei T, Gao XW, Tung CH, Wu LZ. Cobalt-Catalyzed Cross-Dehydrogenative Coupling Reaction in Water by Visible Light. Org Lett 2015; 17:884-7. [DOI: 10.1021/ol503744a] [Citation(s) in RCA: 110] [Impact Index Per Article: 12.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/16/2022]
Affiliation(s)
- Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
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Wang XZ, Meng QY, Zhong JJ, Gao XW, Lei T, Zhao LM, Li ZJ, Chen B, Tung CH, Wu LZ. The singlet excited state of BODIPY promoted aerobic cross-dehydrogenative-coupling reactions under visible light. Chem Commun (Camb) 2015; 51:11256-9. [DOI: 10.1039/c5cc03421c] [Citation(s) in RCA: 81] [Impact Index Per Article: 9.0] [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
We disclose for the first time that the singlet excited state (1PS*) of BODIPY rather than triplet excited state (3PS*) can drive C–H bond activation to form C–C and C–P bonds smoothly upon irradiation by visible light.
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Tao CS, Qiu ZY, Meng QY, Wu JJ, Liu F, Wang CM, Cui FZ. Mineralized Collagen Incorporated Polymethyl Methacrylate Bone Cement for Percutaneous Vertebroplasty and Percutaneous Kyphoplasty. J BIOMATER TISS ENG 2014. [DOI: 10.1166/jbt.2014.1250] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/23/2022]
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Meng QY, Lei T, Zhao LM, Wu CJ, Zhong JJ, Gao XW, Tung CH, Wu LZ. A Unique 1,2-Acyl Migration for the Construction of Quaternary Carbon by Visible Light Irradiation of Platinum(II) Polypyridyl Complex and Molecular Oxygen. Org Lett 2014; 16:5968-71. [DOI: 10.1021/ol502995h] [Citation(s) in RCA: 52] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
- Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Tao Lei
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Lei-Min Zhao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Cheng-Juan Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Jian-Ji Zhong
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Xue-Wang Gao
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
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Zhong JJ, Wu CJ, Meng QY, Gao XW, Lei T, Tung CH, Wu LZ. A Cascade Cross-Coupling andin SituHydrogenation Reaction by Visible Light Catalysis. Adv Synth Catal 2014. [DOI: 10.1002/adsc.201400588] [Citation(s) in RCA: 48] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
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Chen Z, Kang L, Meng QY, Liu H, Wang Z, Guo Z, Cui FZ. Degradability of injectable calcium sulfate/mineralized collagen-based bone repair material and its effect on bone tissue regeneration. Mater Sci Eng C Mater Biol Appl 2014; 45:94-102. [PMID: 25491806 DOI: 10.1016/j.msec.2014.08.060] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 03/28/2014] [Revised: 07/31/2014] [Accepted: 08/29/2014] [Indexed: 11/17/2022]
Abstract
The nHAC/CSH composite is an injectable bone repair material with controllable injectability and self-setting properties prepared by introducing calcium sulfate hemihydrate (CSH) into mineralized collagen (nHAC). When mixed with water, the nHAC/CSH composites can be transformed into mineralized collagen/calcium sulfate dihydrate (nHAC/CSD) composites. The nHAC/CSD composites have good biocompatibility and osteogenic capability. Considering that the degradation behavior of bone repair material is another important factor for its clinical applications, the degradability of nHAC/CSD composites was studied. The results showed that the degradation ratio of the nHAC/CSD composites with lower nHAC content increased with the L/S ratio increase of injectable materials, but the variety of L/S ratio had no significant effect on the degradation ratio of the nHAC/CSD composites with higher nHAC content. Increasing nHAC content in the composites could slow down the degradation of nHAC/CSD composite. Setting accelerator had no significant effect on the degradability of nHAC/CSD composites. In vivo histological analysis suggests that the degradation rate of materials can match the growth rate of new mandibular bone tissues in the implanted site of rabbit. The regulable degradability of materials resulting from the special prescriptions of injectable nHAC/CSH composites will further improve the workability of nHAC/CSD composites.
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Affiliation(s)
- Zonggang Chen
- National Glycoengineering Research Center, Shandong University, Jinan 250100, PR China; Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China.
| | - Lingzhi Kang
- National Glycoengineering Research Center, Shandong University, Jinan 250100, PR China
| | - Qing-Yuan Meng
- Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China
| | - Huanye Liu
- Department of Prosthodontics, School of Stomatology, China Medical University, Shenyang 110001, PR China
| | - Zhaoliang Wang
- Jinan Military General Hospital of PLA, Jinan 250031, PR China
| | - Zhongwu Guo
- National Glycoengineering Research Center, Shandong University, Jinan 250100, PR China.
| | - Fu-Zhai Cui
- Department of Materials Science and Engineering, Tsinghua University, Beijing 100084, PR China.
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48
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Wang J, Feng K, Zhang HH, Chen B, Li ZJ, Meng QY, Zhang LP, Tung CH, Wu LZ. Enhanced photocatalytic hydrogen evolution by combining water soluble graphene with cobalt salts. Beilstein J Nanotechnol 2014; 5:1167-1174. [PMID: 25161850 PMCID: PMC4142871 DOI: 10.3762/bjnano.5.128] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/07/2014] [Accepted: 07/02/2014] [Indexed: 06/03/2023]
Abstract
There is tremendous effort put in the pursuit for cheap and efficient catalysts for photocatalytic hydrogen evolution systems. Herein, we report an active catalyst that uses the earth-abundant element cobalt and water-dispersible sulfonated graphene. The photocatalytic hydrogen evolution activity of the catalyst was tested by using triethanolamine (TEOA) as electron donor and eosin Y (EY) as the photosensitizer under LED irradiation at 525 nm. Hydrogen was produced constantly even after 20 h, and the turnover number (TON) reached 148 (H2/Co) in 4 h with respect to the initial concentration of the added cobalt salts was shown to be 5.6 times larger than that without graphene.
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Affiliation(s)
- Jing Wang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Ke Feng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Hui-Hui Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Bin Chen
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Qing-Yuan Meng
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Ping Zhang
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Chen-Ho Tung
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
| | - Li-Zhu Wu
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, the Chinese Academy of Sciences, Beijing 100190, P. R. China
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Li ZJ, Fan XB, Li XB, Li JX, Ye C, Wang JJ, Yu S, Li CB, Gao YJ, Meng QY, Tung CH, Wu LZ. Visible light catalysis-assisted assembly of Ni(h)-QD hollow nanospheres in situ via hydrogen bubbles. J Am Chem Soc 2014; 136:8261-8. [PMID: 24835886 DOI: 10.1021/ja5047236] [Citation(s) in RCA: 69] [Impact Index Per Article: 6.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hollow spheres are one of the most promising micro-/nanostructures because of their unique performance in diverse applications. Templates, surfactants, and structure-directing agents are often used to control the sizes and morphologies of hollow spheres. In this Article, we describe a simple method based on visible light catalysis for preparing hollow nanospheres from CdE (E = Te, Se, and S) quantum dots (QDs) and nickel (Ni(2+)) salts in aqueous media. In contrast to the well-developed traditional approaches, the hollow nanospheres of QDs are formed in situ by the photogeneration of hydrogen (H2) gas bubbles at room temperature. Each component, that is, the QDs, metal ions, ascorbic acid (H2A), and visible light, is essential for the formation of hollow nanospheres. The quality of the hollow nanospheres depends on the pH, metal ions, and wavelength and intensity of visible light used. Of the various metal ions investigated, including Cu(+), Cu(2+), Fe(2+), Fe(3+), Ni(2+), Mn(2+), RuCl5(2-), Ag(+), and PtCl4(2-), Ni(2+) ions showed the best ability to generate H2 and hollow-structured nanospheres under visible light irradiation. The average diameter and shell thickness of the nanospheres ranged from 10 to 20 nm and from 3 to 6 nm, respectively, which are values rarely reported in the literature. Studies using high-resolution transmission electron microscopy (HRTEM), X-ray photoelectron spectroscopy (XPS), X-ray diffraction (XRD), inductively coupled plasma-mass spectroscopy (ICP-AES), and steady-state and time-resolved spectroscopy revealed the chemical nature of the hollow nanospheres. Additionally, the hollow-structured nanospheres exhibit excellent photocatalytic activity and stability for the generation of H2 with a rate constant of 21 μmol h(-1) mg(-1) and a turnover number (TON) of 137,500 or 30,250 for CdTe QDs or nickel, respectively, under visible light irradiation for 42 h.
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Affiliation(s)
- Zhi-Jun Li
- Key Laboratory of Photochemical Conversion and Optoelectronic Materials, Technical Institute of Physics and Chemistry & University of Chinese Academy of Sciences, Chinese Academy of Sciences , Beijing 100190, People's Republic of China
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Li SP, Zheng ZY, Meng QY, Yuan CH. Barriers to tuberculosis care for drug users in two provinces of China: a qualitative study. Int J Tuberc Lung Dis 2014; 17:1358-63. [PMID: 24025390 DOI: 10.5588/ijtld.12.0784] [Citation(s) in RCA: 3] [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: 11/10/2022] Open
Abstract
SETTING Two compulsory drug rehabilitation centres in Yunnan and Sichuan Provinces, Southwest China. OBJECTIVE To understand barriers to tuberculosis (TB) care among drug users in China, and to provide policy recommendations to improve TB control in the drug-using population. DESIGN A qualitative study was designed using in-depth interviews with 147 drug users with TB and 12 key informants. Drug users were purposively selected from two compulsory drug rehabilitation centres and key informants from national and provincial justice administration, local TB control dispensaries and compulsory drug rehabilitation centres. RESULTS Lack of health awareness and knowledge was reported as one barrier to TB care among drug users. The majority of the respondents lacked social support and perceived fear and stigma when seeking TB care. More than half of the respondents who had discontinued their anti-tuberculosis treatment reported that this was due to drug use. Limited provision of TB care in the compulsory drug rehabilitation centres and local TB control dispensaries was also reported as one of the barriers to TB care among drug users. CONCLUSIONS These findings suggest that barriers to TB care for drug users are associated not only with the drug users themselves, but also with the providers and societal factors. Health professionals and policy makers should be aware of these barriers in China.
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Affiliation(s)
- S P Li
- Center for Health Management and Policy, Shandong University, Jinan, China
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