[EN] CHROMIUM-MEDIATED COUPLING AND APPLICATION TO THE SYNTHESIS OF HALICHONDRINS<br/>[FR] COUPLAGE INDUIT PAR CHROME ET APPLICATION À LA SYNTHÈSE D'HALICHONDRINES
申请人:HARVARD COLLEGE
公开号:WO2016176560A8
公开(公告)日:2017-06-22
Unified Synthesis of C1–C19 Building Blocks of Halichondrins via Selective Activation/Coupling of Polyhalogenated Nucleophiles in (Ni)/Cr-Mediated Reactions
作者:Jingwei Li、Wuming Yan、Yoshito Kishi
DOI:10.1021/jacs.5b03499
日期:2015.5.20
A unified synthesis of the C1-C19 buildingblocks 8-10 of halichondrins A-C was developed from the common synthetic intermediates 26a,b. Acetylenic ketones 26a,b were in turn synthesized via selective activation/coupling of polyhalogenated nucleophiles 23a,b with aldehyde 11 in a (Ni)/Cr-mediated coupling reaction. Compared with Ni/Cr-mediated couplings of vinyl iodides and aldehydes, this (Ni)/Cr-mediated