An acid-catalyzed ring-switch reaction of lactams to lactones: concise synthesis of 2,4-dialkyl-3-hydroxybutanolides
作者:Chiaki Yamauchi、Masami Kuriyama、Rumiko Shimazawa、Tsumoru Morimoto、Kiyomi Kakiuchi、Ryuichi Shirai
DOI:10.1016/j.tet.2008.01.107
日期:2008.3
A novel approach for the synthesis of 2,4-dialkyl-3-hydroxybutanolides, having three successive stereogenic centers, by an acid-catalyzed ring-switch reaction of 2-(2-hydroxyalkyl)lactams is described. This transformation was applied to the synthesis of the key intermediates of teromerase inhibitor UCS1025A. (c) 2008 Elsevier Ltd. All rights reserved.