反应详情

By an operation similar to that in Synthetic Example 13 and using 2-methylthiazolidine-2,4-dicarboxylic acid 2-ethyl ester synthesized from DL-cysteine by a method similar to that in Reference Example 2, N-acetyl-2-methylthiazolidine-2,4-dicarboxylic acid (trans form) was obtained as a white solid (yield 70%).