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Metal-free synthesis of 1,2,3-benzotriazines

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Chinese Chemical Letters 2020年第12期31卷 2989-2990页

作者： jin-yang chen Ying-Wu Lin Wei-Min He College of Chemistry and Chemical Engineering Yangtze Normal UniversityChongqing 408000China Hunant Provinicial Key Laboratory of Materials Protection for Flectric Power and Transportation Cchangsha Univerity of Science and TecmologyChangsha 410114China School of Chemistry and Chemical Engineering Hunan University of Science and TechnologyXiangtan 411201China School of Chemistry and Chermical Engineering University of South ChinaHengyang 421001China

The recent molecular iodine catalyzed[1,2]-rearrangement of aryl amines and 3-amino-1 H-indazolesfor the synthesis of 1,2,3-benzotriazines is highlighted.

关键词： Iodine Metal-free Rearrangement reaction 1,2,3-Benzotriazines

Methane formation from CaCO_3 reduction catalyzed by high pressure

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Chinese Chemical Letters 2008年第4期19卷 475-478页

作者： jin yang chen Lu Jiang jin Jun Ping Dong Hai Fei Zheng Gui yang Liu School of Environmental and Chemical Engineering Shanghai UniversityShanghai 201800China School of Sciences Shanghai UniversityShanghai 200436China School of the Earth and Space Sciences Peking UniversityBeijing 100871China

Under high pressures of several giga-pascals using hydrothermal diamond anvil cell,methane generated directly from CaCO3 reduction in gold-lined chamber is in situ measured by Raman spectroscopy at the temperature of 550℃ Fhe reducing agents include FeO,SiO and natural fayalite（Fe2SiO4）,and the resource of hydrogen are water and natural serpentine（Mg3Si2O5（OH）4）. The study demonstrates the existence of abiogenic formation of methane under high pressures in the Earth＇s interior and that the application of high pressure to catalyze multicomponent reactions is a very promising method.

关键词： CaCO3 reduction High pressure Methane Raman spectroscopy

Recent advances in transition-metal-free trifluoromethylation with Togni’s reagents

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Organic Chemistry Frontiers 2022年第4期9卷 1152-1164页

作者： jin-yang chen jing Huang Kai Sun Wei-Min He School of Chemistry and Chemical Engineering University of South ChinaHengyangHunan 421001China Green Catalysis Center College of ChemistryZhengzhou UniversityKexue Road No.100Zhengzhou 450001China

Transition-metal-free trifluoromethylations have attracted significant research interest driven by the increasing importance of CF 3-containing *** the various trifluoromethylation reagents,Togni’s reagents exhibit e... 详细信息

关键词： compounds reagents exceptional

Comparative analysis of biological characteristics of adult mesenchymal stem cells with different tissue origins

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Asian Pacific Journal of Tropical Medicine 2015年第9期8卷 725-731页

作者： jin-yang chen Xiao-Zhou Mou Xiao-Chun Du Charlie Xiang State Key Laboratory for Diagnosis and Treatment of Infectious Diseases the First Affiliated Hospital College of Medicine Zhejiang University Clinical Research Institute Zhejiang Provincial People's Hospital S-Evans Biosciences

Objective: To invest the dif erences among mesenchymal stem cells(MSCs) derived from different tissues and their impacts on clinical applications. Methods: In this study, MSCs were isolated from adipose tissue(AD), umbilical cord tissue(UC), and menstrual blood(Men) and comparedtheir biological characteristics in terms of proliferation capacity, passage capacity, colony formation, and surface markers were compared. Results: The stem cells(SCs) obtained from different sources were all characterized as MSCs, but demonstrated some dif erences. Umbilical cord-derived MSCs(UCMSCs) were able to overcome density inhibition. The proliferation rate decreased in the order UCMSCs> Men SCs> ADSCs, while the colony-forming ability decreased in the order Men SCs> ADSCs> UCMSCs. Based on gene-expression data for MSCs from dif erent sources within the same donor, 768 Men SC genes were found that were specii cally upregulated or downregulated compared with bone marrow-derived MSCs and UCMSCs, most of which were involved in cell function-related pathways. In addition, Men SCs appeared to be superior in terms of immune inl ammation, stress response, and neural dif erentiation potentials, but weaker in terms of osteogenic and chondrogenic dif erentiation capacities, compared with UCMSCs and bone marrow-derived MSCs. Conclusions: Men SCs have higher extraction ei ciency, colony-forming ability, and long time passage capacity. Although the proliferation capacity is inferior to UCMSCs.

关键词： Adipose Umbilical cord Menstrual blood Mesenchymal stem cell

Practical and sustainable approach for clean preparation of 5-organylselanyl uracils

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Chinese Chemical Letters 2021年第1期32卷 475-479页

作者： jin-yang chen Chun-Tao Zhong Qing-Wen Gui Yuan-Ming Zhou yang-yang Fang Kai-Jian Liu Ying-Wu Lin Zhong Cao Wei-Min He College of Chemistry and Chemical Engineering Yangtze Normal UniversityChongqing 408000China Department of Chemistry Hunan University of Science and EngineeringYongzhou 425100China Hunan Provincial Key Laboratory of Materials Protection for Electric Power and Transportation Changsha University of Science and TechnologyChangsha 410114China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

An eco-friendly,sustainable and practical method for the efficient preparation of 5-organylselanyl uracils through the electrochemical selenylation of uracils and dio rganyl diselenides at room temperature under oxida... 详细信息

关键词： Selenylation Electrochemistry Diorganyl diselenides Atom-economy Recyclability

Ultrasound-assisted tandem synthesis of tri-and tetra-substituted pyrrole-2-carbonitriles from alkenes,TMSCN and N,N-disubstituted formamides

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Chinese Chemical Letters 2020年第12期31卷 3241-3244页

作者： Qing-Wen Gui Fan Teng Sheng-Neng Ying yang Liu Tao Guo Jian-Xin Tang jin-yang chen Zhong Cao Wei-Min He College of Chemistry and Materials Science Hunan Agricultural UniversityChangsha 410128China School of Life Scienices and chenistry Hunan University of Technologyzhuzhou 412007China Hunan Provincial Key Laboratory of Materials Protection for Flectric Power and Tramnsportation Changsha Univerity of Sciene and TechnologyChangsha 410114China

An energy-saving and eco-friendly method for the efficient construction of various tri-and tetrasubstituted pyrrolecarbonitriles through ultrasound-assisted multicomponent tandem reaction of readily available alkenes,TMSCN and N,N-disubstituted formamides within 40 min under metal-,solvent-free and mild conditions was *** dual role of iodine(catalyst and oxidant)notably simplified the reaction conditions and reduced the chemical waste generated.

关键词： Green chemistry Solvent-free Tandem reaction Dual role Ultrasound

Electrochemical regioselective synthesis of N-substituted/unsubstituted 4-selanylisoquinolin-1(2H)-ones

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Chinese Chemical Letters 2022年第3期33卷 1501-1504页

作者： Zhi-Lin Wu jin-yang chen Xian-Zhi Tian Wen-Tao Ouyang Zhuo-Tao Zhang Wei-Min He School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

A novel and efficient electro-chemical initiated radical strategy was developed for the preparation of both N-substituted and N-unsubstituted 4-selanylisoquinolin-1(2H)-ones through selenylation of isoquinolin-1(2H)-o... 详细信息

关键词： Organodiselenide Electrochemistry Radical Atom economy Additives-free

TBAI/H_(2)O-cooperative electrocatalytic decarboxylation coupling-annulation of quinoxalin-2(1H)-ones with N-arylglycines

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Chinese Chemical Letters 2023年第7期34卷 112-116页

作者： Yu-Han Lu Zhuo-Tao Zhang Hong-Yu Wu Min-Hang Zhou Hai-yang Song Hong-Tao Ji Jun Jiang jin-yang chen Wei-Min He Hengyang Medical School University of South ChinaHengyang 421001China School of Chemistry and Chemical Engineering University of South ChinaHengyang 421001China

The first example of TBAI/H_(2)O cooperative electrocatalytic coupling-annulation of quinoxalin-2(1H)-ones with N-arylglycines was developed. A broad range of tetrahydroimidazo[1,5-a]quinoxalin-4(5H)-ones were obtained in good to excellent yields with exclusive chemoselectivities and excellent regioselectivities. The H-hydrogen bond served as a key factor for the electrocatalytic production of aminomethyl radical at lower oxidative potential.

关键词： Green chemistry Electrochemistry Aminomethyl radical Annulation reaction

Menstrual blood-derived mesenchymal stem cells differentiate into functional hepatocyte-like cells

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Journal of Zhejiang University-Science B(Biomedicine & Biotechnology) 2013年第11期14卷 961-972页

作者： Xiao-zhou MOU Jian LIN jin-yang chen Yi-fei LI Xiao-xing WU Bing-yu XIANG Cai-yun LI Ju-ming MA Charlie XIANG State Key Laboratory for Diagnosis and Treatment of Infectious Diseases the First Affiliated HospitalSchool of MedicineZhejiang University Institute for Cell-Based Drug Development of Zhejiang Province People's Hospital of Tongling S-Evans Biosciences The 117th Hospital of PLA Collaborative Innovation Center for Diagnosis and Treatment of Infectious Diseases

Orthotopic liver transplantation(OLT)is the only proven effective treatment for both end-stage and metabolic liver *** transplantation is a promising alternative for OLT,but the lack of available donor livers has hampered its clinical ***-like cells(HLCs)differentiated from many multi-potential stem cells can help repair damaged liver *** almost suitable cells currently identified for human use are difficult to harvest and involve invasive ***,a novel mesenchymal stem cell derived from human menstrual blood(MenSC)has been discovered and obtained easily and *** this study,we examined whether the MenSCs are able to differentiate into functional HLCs in *** three weeks of incubation in hepatogenic differentiation medium containing hepatocyte growth factor(HGF),fibroblast growth factor-4(FGF-4),and oncostain M(OSM),cuboidal HLCs were observed,and cells also expressed hepatocyte-specific marker genes including albumin(ALB),α-fetoprotein(AFP),cytokeratin 18/19(CK18/19),and cytochrome P450 1A1/3A4(CYP1A1/3A4).Differentiated cells further demonstrated in vitro mature hepatocyte functions such as urea synthesis,glycogen storage,and indocyanine green(ICG)*** intrasplenic transplantation into mice with 2/3 partial hepatectomy,the MenSC-derived HLCs were detected in recipient livers and expressed human ALB *** also showed that MenSC-derived HLC transplantation could restore the serum ALB level and significantly suppressed transaminase activity of liver injury *** conclusion,MenSCs may serve as an ideal,easily accessible source of material for tissue engineering and cell therapy of liver tissues.

关键词： Menstrual blood-derived mesenchymal stem cell(MenSC) Differentiation Hepatocyte Intrasplenic transplantation Partial hepatectomy