A class of compounds that have a pyrazine structure, specifically disclosed is a compound represented by formula (VII), isomers or pharmaceutically acceptable salts thereof, and an application thereof in the preparation of CRAC inhibitors.
Rh(II)-Catalyzed Ring Expansion of Cyclopropyl N-Tosylhydrazones to 1-Substituted Cyclobutenes
作者:Jingfeng Huo、Jianbo Wang、Wenbai Ouyang
DOI:10.1055/a-1995-5960
日期:——
useful synthetic intermediates as well as important motifs in functional molecules. Herein, we report a straightforward access toward monosubstituted cyclobutenes from cyclopropyl N-tosylhydrazone. 1,2-Aryl or -alkyl shift of the Rh(II) carbene intermediate plays the key role in this transformation.
[EN] 2H-BENZOPYRAN DERIVATIVES AS CRAC INHIBITORS<br/>[FR] DÉRIVÉS 2H-BENZOPYRANE UTILISABLES EN TANT QU'INHIBITEURS DE CRAC<br/>[ZH] 作为CRAC抑制剂的2H-苯并吡喃衍生物
Convergent Synthesis of Dihydropyrans from Catalytic Three-Component Reactions of Vinylcyclopropanes, Diazoesters, and Diphenyl Sulfoxide
作者:Ya-Lin Zhang、Rui-Ting Guo、Heng Luo、Xin-Shen Liang、Xiao-Chen Wang
DOI:10.1021/acs.orglett.0c01992
日期:2020.7.17
three-component reaction of vinylcyclopropanes, diazoesters, and diphenyl sulfoxide has been developed. The reaction gives polysubstituted dihydropyrans as the reactionproducts. Mechanistic studies indicate that isomerization of vinylcyclopropanes gives conjugated dienes, which then undergo [4 + 2]-cycloaddition with vicinaltricarbonyl compounds generated by oxygen atom transfer from diphenyl sulfoxide