1-{3-cyano-5-(ethoxycarbonyl)-6-[(2-oxo-pyrrolidin-1-yl)methyl]pyridin-2-yl}piperidine-4-carboxylic acid 、
1-(4-chloro-2-fluorophenyl)methanesulfonamide 以to give ethyl 6-(4-{[(4-chloro-2-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]nicotinate的产率得到ethyl 6-(4-{[(4-chloro-2-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-[(2-oxo-pyrrolidin-1-yl)methyl]nicotinate