(2S,4R)-N-(1-cyanocyclopropyl)-4-(3-(trifluoromethyl)phenylsulfonyl)pyrrolidine-2-carboxamide 、 1-(piperidin-1-yl)cyclopropanecarboxylic acid hydrochloride 以yielded (2S,4R)-N-(1-cyanocyclopropyl)-1-(1-(piperidin-1-yl)cyclopropanecarbonyl)-4-(3-(trifluoromethyl)phenylsulfonyl)pyrrolidine-2-carboxamide as a light yellow solid (56%)的产率得到(2S,4R)-N-(1-cyanocyclopropyl)-1-(1-(piperidin-1-yl)cyclopropanecarbonyl)-4-(3-(trifluoromethyl)phenylsulfonyl)pyrrolidine-2-carboxamide