Ligand‐Controlled Regiodivergent Thiocarbonylation of Alkynes toward Linear and Branched α,β‐Unsaturated Thioesters
作者:Han‐Jun Ai、Wangyang Lu、Xiao‐Feng Wu
DOI:10.1002/anie.202106079
日期:2021.7.26
the synthesis of unsaturated thioesters. A robust ligand-controlled regioselective thiocarbonylation of alkynes is developed. Utilizing boronic acid and 5-chlorosalicylic acid as the acid additive to in situ form 5-chloroborosalicylic acid (5-Cl-BSA), and bis(2-diphenylphosphinophenyl)ether (DPEphos) as the ligand, linear α,β-unsaturated thioesters were produced in a straightforward manner. Switching
A Stereoselective Synthetic Route To (<i>E</i>)-α,β-Unsaturated Thioesters
作者:Ping Zhong、Zhi-Xing Xiong、Xian Huang
DOI:10.1080/00397910008086904
日期:2000.8
Terminal alkynes 1 react with Cp2Zr(H)Cl (Cp = η 5-C5H5) and CO to give acylzirconocene chloride derivatives 2, which are trapped with arylsulfenyl chloride to afford (E)- α,β-unsaturated thioesters 3.
末端炔烃 1 与 Cp2Zr(H)Cl (Cp = η 5-C5H5) 和 CO 反应生成酰基二茂氯化锆衍生物 2,其被芳基亚磺酰氯捕获以提供 (E)-α,β-不饱和硫酯 3。
[EN] META-GUANIDINE, UREA, THIOUREA OR AZACYCLIC AMINO BENZOIC ACID DERIVATIVES AS INTEGRIN ANTAGONISTS<br/>[FR] DERIVES DE LA META-GUANIDINE, DE L'UREE, DE LA THIO-UREE OU DE L'ACIDE AMINOBENZOIQUE AZACYCLIQUE UTILISES COMME ANTAGONISTES DE L'INTEGRINE
申请人:G.D. SEARLE & CO.
公开号:WO1997008145A1
公开(公告)日:1997-03-06
(EN) The present invention relates to a class of compounds represented by formula (I) or a pharmaceutically acceptable salt thereof, wherein A is (a) or (b) or (c) or (d) pharmaceutical compositions thereof and methods of using such compounds and compositions as $g(a)v$g(b)3 integrin antagonists.(FR) L'invention concerne une classe de composés représentés par la formule I et leurs sels acceptables sur le plan pharmaceutique. Dans cette formule, A est (a) ou (b) ou (c) ou (d). L'invention concerne également des préparations pharmaceutiques contenant ces composés, ainsi que des procédés d'utilisation de ces composés et de ces préparations comme antagonistes de l'intégrine $g(a)v$g(b)3.