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