Enantioselective Synthesis of α-Alkyl-β,γ-unsaturated Esters through Efficient Cu-Catalyzed Allylic Alkylations
摘要:
A method for enantioselective Cu-catalyzed allylic substitution between various alkylzincs and alpha,beta-unsaturated carboxylic esters that bear a gamma-phosphate is reported. These transformations afford alpha-alkyl-beta,gamma-unsaturated carbonyls with regioselectivities of 7:1 to >20:1 (S(N)2':S(N)2) and in 87-97% ee. The utility of the method is illustrated by a convergent total synthesis of topoisomerse II inhibitor (R)-elenic acid.
[EN] STING AGONISTS AND USES THEREOF<br/>[FR] AGONISTES DE STING ET LEURS UTILISATIONS
申请人:NIMBUS TITAN INC
公开号:WO2020132582A1
公开(公告)日:2020-06-25
The present invention provides compounds, compositions thereof, and methods of using the same for the modulation of STING, and the treatment of STING-mediated disorders.
本发明提供了化合物、其组合物以及使用这些化合物调节STING并治疗STING介导的疾病的方法。
Enantioselective Synthesis of α-Alkyl-β,γ-unsaturated Esters through Efficient Cu-Catalyzed Allylic Alkylations
作者:Kerry E. Murphy、Amir H. Hoveyda
DOI:10.1021/ja0300618
日期:2003.4.1
A method for enantioselective Cu-catalyzed allylic substitution between various alkylzincs and alpha,beta-unsaturated carboxylic esters that bear a gamma-phosphate is reported. These transformations afford alpha-alkyl-beta,gamma-unsaturated carbonyls with regioselectivities of 7:1 to >20:1 (S(N)2':S(N)2) and in 87-97% ee. The utility of the method is illustrated by a convergent total synthesis of topoisomerse II inhibitor (R)-elenic acid.
Phosphinative cyclopropanation of allyl phosphates with lithium phosphides
作者:Ryo Shintani、Ayase Ohzono、Kentaro Shirota
DOI:10.1039/d0cc04854b
日期:——
A new cyclopropanation reaction of allylphosphates with lithium phosphides has been developed to give cyclopropylphosphines through the formation of both a C–P bond and a cyclopropane ring at the same time, and high selectivity toward cyclopropanation over allylic substitution has been realized by conducting the reaction in the presence of HMPA.