methanesulfonate 、
(2S,4S)-2-(1-cyanocyclopropylcarbamoyl)-4-methanesulfonyloxypyrrolidine-1-carboxylic acid tert-butyl ester 、
4-溴-2-(三氟甲基)苯硫醇 以yielded (2S,4R)-4-(4-bromo-2-trifluoromethyl-phenylsulfanyl)-2-(1-cyano-cyclopropylcarbamoyl)-pyrrolidine-1-carboxylic acid t-butyl ester as a colorless foam的产率得到(2S,4R)-4-(4-bromo-2-trifluoromethyl-phenylsulfanyl)-2-(1-cyano-cyclopropylcarbamoyl)-pyrrolidine-1-carboxylic acid t-butyl ester