A General Asymmetric Synthesis of <i>syn</i>- and <i>anti</i>-β-Substituted Cysteine and Serine Derivatives
作者:Chiyi Xiong、Wei Wang、Victor J. Hruby
DOI:10.1021/jo011172x
日期:2002.5.1
syn-beta-substituted cysteine and serinederivatives. In this approach, the key intermediates, > 94% enantiomerically pure cyclic sulfates 3 and aziridines 7, were prepared from alpha,beta-unsaturated esters 1, employing the Sharpless asymmetric dihydroxylation. The high regio- and stereoselective ring-opening reactions of cyclic sulfates and aziridines provided enantiomerically pure beta-substituted cysteine and serine