(2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)pyrrolidine-2-carboxamide 、 1-(piperidin-1-yl)cyclopropanecarboxylic acid hydrochloride 以yielded (2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(piperidin-1-yl)cyclopropanecarbonyl)pyrrolidine-2-carboxamide as a colorless oil (75%)的产率得到(2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(piperidin-1-yl)cyclopropanecarbonyl)pyrrolidine-2-carboxamide