反应详情

A mixture of 1-[2-(R)-ethoxycarbonylamino-3-isopropylsulfanyl-3-methyl-butyryl-]-pyrrolidine-2-(S)-carboxylic acid methyl ester (0.45 g) and 0.06 g of LiOH in 6 mL of methanol and 1 mL of water was stirred for 16 h at ambient temperature. KHSO4 was added, the volatiles were pumped off followed by addition of water, extraction with ethyl acetate and concentration of the organic layer to give 0.34 g (79%) of the title compound as a colorless oil. (+)-APCI-MS: 361 (MH+).