Synthesis of the Cytotrienin A CoreviaMetal Catalyzed C−C Coupling
摘要:
A synthetic approach to the C17-benzene ansamycins via metal catalyzed C-C coupling is described. Key bond formations include direct iridium catalyzed carbonyl crotylation from the alcohol oxidation level followed by chelation-controlled Sakurai-Seyferth dienylation to form the stereotriad, which Is attached to the arene via Suzuki cross-coupling. The diene-containing carboxylic acid is prepared using rhodium catalyzed acetylene-aldehyde reductive C-C coupling mediated by gaseous hydrogen. Finally, ring-closing metathesis delivers the cytotrienin core.
Synthesis of the Cytotrienin A CoreviaMetal Catalyzed C−C Coupling
摘要:
A synthetic approach to the C17-benzene ansamycins via metal catalyzed C-C coupling is described. Key bond formations include direct iridium catalyzed carbonyl crotylation from the alcohol oxidation level followed by chelation-controlled Sakurai-Seyferth dienylation to form the stereotriad, which Is attached to the arene via Suzuki cross-coupling. The diene-containing carboxylic acid is prepared using rhodium catalyzed acetylene-aldehyde reductive C-C coupling mediated by gaseous hydrogen. Finally, ring-closing metathesis delivers the cytotrienin core.
NOVEL BENZOPYRAN COMPOUNDS AND METHODS FOR THEIR USE
申请人:Sugen, Inc.
公开号:EP0833630A1
公开(公告)日:1998-04-08
EP0833630A4
申请人:——
公开号:EP0833630A4
公开(公告)日:1998-09-02
[EN] NOVEL BENZOPYRAN COMPOUNDS AND METHODS FOR THEIR USE<br/>[FR] NOUVEAUX COMPOSES DE BENZOPYRANNE ET LEURS PROCEDES D'UTILISATION
申请人:SUGEN, INC.
公开号:WO1996040110A1
公开(公告)日:1996-12-19
(EN) The present invention relates to organic molecules capable of modulating tyrosine kinase signal transduction in order to regulate, modulate and/or inhibit abnormal cell proliferation.(FR) La présente invention se rapporte à des molécules organiques capables de moduler la transduction de signal des tyrosines kinases, de manière à réguler, moduler et/ou inhiber la prolifération cellulaire anormale.