作者:Gaetano Barbaro、Arturo Battaglia、Fabio Di Giuseppe、Patrizia Giorgianni、Andrea Guerrini、Carlo Bertucci、Silvano Geremia
DOI:10.1016/s0957-4166(99)00288-8
日期:1999.7
A method is described for the chiral synthesis of (3R,4S)-3-methyl-3-hydroxy-4-phenyl-beta-lactam, a useful precursor for the semi-synthesis of 2'-methyl-taxoids. This protocol follows Seebach's synthetic principle of 'self-regeneration of stereocenters' (SRS) and has been applied to addition reactions of the (2S)-chiral enolates of dioxolan-4-ones, derived from the acetalization of (S)-alpha-lactic acid and tert-butylaldehyde or pinacolone, to N-trimethylsilylphenyl aldimine. (C) 1999 Published by Elsevier Science Ltd. All rights reserved.