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En Route to Diastereopure Polycyclic γ-Lactones by Iridium-Catalyzed Hydride Transfer: 《Chinese Journal of Chemistry》2024年第23期3047-3055,共9页Yang Chen Jingyu Zhang Yecheng Wang Hongguang Du Jiaxi Xu Zhanhui Yang; supported by the National Key Research and Development Program of China(No.2022YFF0709803);Natural Science Foundation of Beijing Municipality(No.2202041);the High Performance Computing Platform of Beijing University of Chemical Technology(BUCT).; The reductive lactonization strategy provides an efficient access to diastereoenriched polycyclicγ-lactones.However,it is still a formidable challenge to develop an efficient and versatile protocol with excellent lev...; 关键词：Iridium catalysis Hydride transfer Reductive lactonization Diastereoselectivity control Polycyclic y-lactones Methodology and reactions Sterichindrance Reduction

Catalytic C-H activation-initiated transdiannulation:An oxygen transfer route to ring-fluorinated tricyclic γ-lactones: 《Chinese Chemical Letters》2024年第9期145-149,共5页Qiuyun Li Yannan Zhu Yining Wang Gang Qi Wen-Juan Hao Kelu Yan Bo Jiang; financial support from the schoollevel research projects of Yancheng Institute of Technology(No.xjr2020044);the National Natural Science Foundation of China(Nos.22101152,22271123 and 21971090)。; Catalytic C–H activation-initiated annulation reactions have emerged as a versatile strategy for the efficient construction of diverse ring structural units and complex cyclic molecules in synthetic chemistry.Herein,...; 关键词：C-H bond activation ENAMINONES Transannulation Oxygen transfer Regioselectivity

Difluoroalkylation/Lactonization of Alkenes with BrCF_(2)CO_(2)K via Photoredox Catalysis:Access toα,α-Difluoro-γ-lactones被引量：2: 《Chinese Journal of Chemistry》2023年第21期2819-2824,共6页Min Zhang Qiang Li Jin-Hong Lin Ji-Chang Xiao; We thank the National Key Research and Development Program of China(2021YFF0701700);the National Natural Science Foundation of China(21971252,21991122,22271181);the Science and Technology Commission of Shanghai Municipality(22ZR1423600)for financial support.; Due to its unique electronic properties,the difluoromethylene group(CF2)has served as a valuable unity in the design of biologically active molecules.Sinceγ-lactones display a broad range of biological properties,α,...; 关键词：PHOTOREDOX Catalysis Fluorine LACTONES ALKENES

Fe(III)-Catalyzed Aerobic Oxidation of 1,4-Diols被引量：2: 《Chinese Journal of Chemistry》2023年第16期1963-1966,共4页Junlin Li Jinxian Liu Chunling Fu Shengming Ma; Financial support from the National Natural Science Foundation of China(21988101)is greatly appreciated.; Comprehensive Summary Aerobic oxidation has been catching more and more attention because of its atom economy and environmental friendliness.Oxidation of diols is a challenge due to various oxidative products.Thus,hig...; 关键词：Aerobic oxidation 1 4-Diol Γ-LACTONE Catalysis lron TEMPO KCI CHEMOSELECTIVITY Chirality Selective oxidation

Homogentisic acid γ-lactone suppresses the virulence factors of Pseudomonas aeruginosa by quenching its quorum sensing signal molecules被引量：2: 《Chinese Chemical Letters》2018年第2期313-316,共4页Shuihong Li Polly H.M. Leung Xinya Xu Chunhui Wu; supported by the National Natural Science Foundation of China (Nos. 81401512, 41606186);the Scientific Research Fund of Hunan Provincial Education Department (No. 14B157);China Postdoctoral Science Foundation (No. 2016M602419);the Hong Kong Scholars Program (No. XJ2015022); Bacterial quorum sensing（QS） molecules are involved in the coordination of certain behaviors such as biofilm formation, virulence and antibiotic resistance. QS molecules（autoinducers） and their corresponding recep...; 关键词：Homogentisicacid γ-lactone Quorum sensing Biofilm Pseudomonas aeruginosa Pyocyanin

Unexpected Grob-type fragmentation of vinylogous β-silyloxy-cyclobutanone into γ-lactone: 《Chinese Chemical Letters》2017年第5期968-970,共3页Xiang Wu Wei-Dong Z.Li; financial support from National Natural Science Foundation of China(NSFC,Nos.21302177,21672049 and 21672030); An unusual formal oxy transposition of vinylogous β-silyloxy-cyclobutanone 1（a 1,5-difunctionalized substrate） under mild acidic conditions（aqueous HF in CH3CN at 0℃） to the decalinic y-lactone 2 was described.A...; 关键词：Grob fragmentation Vinylogous β-silyloxy-cyclobutanone Decalinic γ-lactone Oxy transposition Intramolecular γ-lactonization

A Short Synthesis of Clionamine D: 《Chinese Journal of Chemistry》2015年第11期1235-1238,共4页Xiang Hao Jingjing Wu Hailong Tian Yong Shi Jingrong Lin Weisheng Tian; Herein we describe a scalable four-step preparation of a-methylene-y-lactone 3 from steroidal sapogenin. This method allowed a facile synthesis of clionamine D, a natural aminosteroid with potent autophagy bioactivity...; 关键词：clionamine D α-methylene-γ-lactone singlet oxygen natural product SYNTHESIS

Natural and Semi-Synthetic Pseudoguaianolides as Inhibitors of NF-κB: 《Journal of Biomedical Science and Engineering》2014年第10期833-847,共15页Rodrigo Villagomez Juan Antonio Collado Eduardo Munoz Giovanna Almanza Olov Sterner; Damsin (1) is a natural pseudoguaianolide sesquiterpene that inhibits NF-κB, a protein complex that controls the transcription of DNA in mammalian cells, and has a potential for standing model for the development of ...; 关键词：Damsin α Methylene-γ-Lactone Sesquiterpenoids Anti-Cancer Activity

Two New Acyclic Diterpene- γ-lactones from the Leaves of Salix matsudana: 《Chinese Chemical Letters》2002年第5期432-435,共4页JinXinWANG ShangZhenZHENG 等; Two new acyclic diterpene-g-lactones named hanliuine III (1) and hanliuine IV (2) were isolated from leaves of Salix matsudana (Chinese name 揾anliu?. Their structures were deduced from spectral data.; 关键词：Salix matsudana acyclic diterpene - g-lactone.

Stereoselective Addition of Organotitanium and Grignard Reagents to 3,5-O-isopropylidene-L-glucurono-γ-lactone被引量：5: 《Chinese Chemical Letters》1998年第10期889-892,共4页Hong CHEN Shao Yi SUN and De Quan YU(Institute of Meteria Medica, Chinese Academy of Medical Sciences & Peking Union Medical College, Beijing 100050); Substituted PhMgX and PhTi(OCHMe2)4MgX react with 3,5-O-isopropylidene-L-glucurono-γ-lactone 4 to give tetrads 5a-e and its stereoisomers 6a-e Tetrads 5a-e are the important intermediates in the synthesis of howiinol...; 关键词：Organotitanium reagents Stereoselective reaction 3 5-O-isopropylidene-L-glucurono-γ-lactone

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