(2S,4R)-4-(2-chlorobenzenesulfonyl)-2-(1-cyanocyclopropylcarbamoyl)pyrrolidine hydrochloric acid   、                                                                                      
1-甲基哌啶-4-甲酸   、                                                                                                                                                                                                                                                                                                                                                                                                以to give (2S,4R)-4-(2-chloro-benzenesulfonyl)-1-(1-methyl-piperidine-4-carbonyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide as a white solid的产率得到(2S,4R)-4-(2-chlorobenzenesulfonyl)-1-(1-methylpiperidine-4-carbonyl)pyrrolidine-2-carboxylic acid (1-cyanocyclopropyl)amide