(2S,4R)-4-(2-chlorobenzenesulfonyl)-2-(1-cyanocyclopropylcarbamoyl)pyrrolidine hydrochloric acid   、                                                                                      
2-(三氟甲基)丙醛                                                                                                                                                                                                                                                                                                          以to give (2S,4R)-4-(2-chloro-benzenesulfonyl)-1-(3,3,3-trifluoro-2-methyl-propyl)-pyrrolidine-2-carboxylic acid (1-cyano-cyclopropyl)-amide as a colorless solid的产率得到(2S,4R)-4-(2-chlorobenzenesulfonyl)-1-(3,3,3-trifluoro-2-methylpropyl)pyrrolidine-2-carboxylic acid (1-cyanocyclopropyl)amide