An asymmetric synthesis of 12-membered ring macrolide, chloriolide has been accomplished by adopting a linear strategy. Lipase-catalyzed enzymatic kinetic resolution (EKR), asymmetric alkynylation using Trost pro-phenol catalyst followed by Yamaguchi macrolactonization has been successfully employed to achieve the target molecule. (C) 2010 Elsevier Ltd. All rights reserved.
Enantioselective Total Synthesis of Aspergillide C
作者:Tomohiro Nagasawa、Shigefumi Kuwahara
DOI:10.1021/ol802803x
日期:2009.2.5
The first enantioselective totalsynthesis of aspergillide C, a cytotoxic 14-membered macrolide isolated from the marine-derived fungus Aspergillus ostianus, has been accomplished from a commercially available chiral glycidol derivative by a 12-step sequence involving an expeditious preparation of a cyclic acetal intermediate and a trans-selective Ferrier-type two-carbon homologation reaction.