1-{3-cyano-5-(isopropoxycarbonyl)-6-[(2-oxopyrrolidin-1-yl)methyl]pyridin-2-yl}piperidine-4-carboxylic acid   、                                                                                      
1-[4-(三氟甲基)苯基]甲烷磺酰胺                                                                                                                                                                                                                                                                                                          以to give Isopropyl 5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]-6-[4-({[4-(trifluoromethyl)benzyl]sulfonyl}carbamoyl)piperidin-1-yl]nicotinate的产率得到isopropyl 5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]-6-[4-({[4-(trifluoromethyl)benzyl]sulfonyl}carbamoyl)piperidin-1-yl]nicotinate