(2S,4R)-4-(2-chlorobenzenesulfonyl)-2-(1-cyanocyclopropylcarbamoyl)pyrrolidine hydrochloric acid 、
4-吡啶甲醛 以to give (2S,4R)-4-(2-Chloro-benzenesulfonyl)-1-pyridin-4-ylmethyl-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide as a colorless oil的产率得到(2S,4R)-4-(2-chlorobenzenesulfonyl)-1-pyridin-4-ylmethylpyrrolidine-2-carboxylic acid (1-cyanocyclopropyl)amide