(2S,4R)-4-(2-chloro-4-fluorophenylsulfonyl)-N-(1-cyanocyclopropyl)pyrrolidine-2-carboxamide   、                                                                                      
1-(3,3-dimethylpiperidin-1-yl)cyclopropanecarboxylic acid hydrochloride                                                                                                                                                                                                                                                                                                          以yielded (2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(3,3-dimethylpiperidin-1-yl)cyclopropanecarbonyl)pyrrolidine-2-carboxamide as a light yellow solid (15%)的产率得到(2S,4R)-4-(2-chlorophenylsulfonyl)-N-(1-cyanocyclopropyl)-1-(1-(3,3-dimethylpiperidin-1-yl)cyclopropanecarbonyl)pyrrolidine-2-carboxamide