3(R)-methyl-4(S)-(pyridin-2-yl methylthio)azetidin-2-one hydrochloride 、 2-oxo-4(S)-(pyridin-2-yl-methylthio)azetidine-1-carboxylic acid (1(R)-phenylpropyl)amide hydrochloride 在
(R)-(+)-1-异氰酸苯丙酯 作用下,
生成
3(R)-methyl-4(S)-(pyridin-2-ylmethylthio)azetidin-2-one-1-carboxylic acid (1(R)-phenylpropyl)amide hydrochloride