Novel Approach to the Zaragozic Acids. Enantioselective Total Synthesis of 6,7-Dideoxysqualestatin H5
作者:Satoru Naito、Maya Escobar、Philip R. Kym、Spiros Liras、Stephen F. Martin
DOI:10.1021/jo011157s
日期:2002.6.1
The totalsynthesis of 6,7-dideoxysqualestatin H5 (3) has been completed by a concise approach that features the stereoselective intramolecular vinylogous aldol reaction of the furoic ester 25a to give 30 or its trimethylsilyl ether derivative 34, which possess the requisite absolute stereochemistry at C(3)-C(5) of 3. Compound 34 was reduced to the saturated bislactone 39, and the C(1) side chain subunit
Enantioselective synthesis of (S)-homocitric acid lactone and (R)-per-homocitric acid lactone involving organocatalysis
作者:Sunil V. Pansare、Shubhangi V. Adsool、Rajendar Dyapa
DOI:10.1016/j.tetasy.2010.04.050
日期:2010.4
A concise enantioselective synthesis of (S)-homocitric acid lactone and its homolog, via an organocatalytic vinylogous Mukaiyama-Michael reaction of a silyloxy furan derivative and acrolein. is described (C) 2010 Elsevier Ltd All rights reserved