Studies in marine macrolide synthesis: stereocontrolled synthesis of a C21–C34 subunit of the aplyronines
作者:Ian Paterson、Simon B Blakey、Cameron J Cowden
DOI:10.1016/s0040-4039(02)01217-0
日期:2002.8
The C21-C34 subunit 27 of the aplyronines, containing eight stereocentres and a terminal N-methyl-N-vinylformamide moiety, was prepared using the Horner-Wadsworth-Emmons coupling of beta-ketophosphonate 5 with aldehyde 19. The two stereotetrad sequences were constructed by chiral ketone aldol reactions, while the N-methyl-N-vinylformamide was introduced using a novel Wittig olefination. (C) 2002 Elsevier Science Ltd. All rights reserved.