(2S,4R)-4-(2-trifluoromethyl-benzenesulfonyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide hydrochloride 、
对氟苯甲酸 、 以to give (2S,4R)-1-(4-fluoro-benzoyl)-4-(2-trifluoromethyl-benzenesulfonyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide as a pale yellow solid的产率得到(2S,4R)-1-(4-fluorobenzoyl)-4-(2-trifluoromethylbenzenesulfonyl)pyrrolidine-2-carboxylic acid (1-cyanocyclopropyl)amide