<scp>l</scp>-Cysteine, a Versatile Source of Sulfenic Acids. Synthesis of Enantiopure Alliin Analogues
作者:Maria C. Aversa、Anna Barattucci、Paola Bonaccorsi、Placido Giannetto
DOI:10.1021/jo048662k
日期:2005.3.1
generation of transient sulfenic acids, such as 4, 6, 9, and 15, which add to suitable acceptors, allowing formation of sulfoxides showing a biologically active residue. These sulfoxides are easily isolated in enantiomerically pure form. For instance, N-(tert-butoxycarbonyl)-l-cysteine methyl ester (1a) furnished in few steps sulfenic acid 9a, which was readily converted into (R,SS)-(2-tert-butoxycarbonylam