作者:Kenji Morokuma、Yuko Taira、Yumiko Uehara、Setsuya Shibahara、Keisuke Takahashi、Jun Ishihara、Susumi Hatakeyama
DOI:10.1016/j.tetlet.2008.07.004
日期:2008.10
Aldol reaction of di-tert-butyl 4-(4-methoxybenzyloxy)-2-oxobutanoate with pent-4-enal using (S)-1-(3,5-bis(trifluoromethyl)phenyl)-3-(pyrrolidin-2-ylmethyl)thiourea hydrochloride as a catalyst, followed by Pinnick oxidation and tert-butyl esterification, gave (2S,3S)-di-tert-butyl 2-(2-(4-methoxybenzyloxy)ethyl)-3-allyl-2-hydroxysuccinate in high optical purity (85% ee), from which the total synthesis of (+)-trachyspic acid, a tumor cell heparanase inhibitor, was accomplished. (C) 2008 Elsevier Ltd. All rights reserved.