STUDIES ON 2-AZIRIDINECARBOXYLIC ACID: X. SIMPLE STEREOSPECIFIC SYNTHESIS OF OPTICALLY ACTIVE CYSTINE AND THREO-3,3 prime -DIMETHYLCYSTINE.

Article abstract of DOI:10.1246/bcsj.56.1565

Results show that, compared with conventional methods the synthesis of cysteine and 3-methylcysteine by the stereospecific ring-opening reaction of aziridine with H//2S is very convenient for transforming the serine or threonine into optically pure cystine or threo-3,3 prime -dimethylcystine.