Asymmetric Synthesis of 1,2-anti-Disubstituted Taurine Derivatives
作者:Dieter Enders、Dirk Iffland、Gerhard Raabe
DOI:10.1055/s-0029-1216643
日期:2009.5
An efficient asymmetricsynthesis of anti-1,2-disubstituted taurine derivatives through nucleophilic addition of phenylmethanesulfonate to various N-acylimines in the presence of 1,2:5,6-di-O-isopropylidene-α-d-allofuranose as a chiral auxiliary is described. The taurine derivatives were obtained in three steps with good overall yields (36-61%) and excellent enantiomeric excesses (83-98%). The diastereomeric