Asymmetric synthesis of protected α-alkyl-β-amino-δ-hydroxy esters by stereocontrolled elaboration of THYM*
作者:Giuseppe Guanti、Alberto Moro、Enrica Narisano
DOI:10.1016/s0040-4039(00)00351-8
日期:2000.4
Highly diastereoselective internal Michael addition of the carbamate moiety of enoate 1b [derived from asymmetrized tris(hydroxymethyl)methane (THYM*)] leads to oxazinone 4, which can, in turn, be alkylated with moderate to good diastereoselectivity in the position cl to the ester moiety to give protected anti,anti alpha-alkyl-beta- amino-delta-hydroxy esters. (C) 2000 Elsevier Science Ltd. All rights reserved.