1-{5-(ethoxycarbonyl)-3-fluoro-6-[(2-oxopyrrolidin-1-yl)methyl]pyridin-2-yl}piperidine-4-carboxylic acid 、
苯甲磺酰胺 以to give ethyl 6-{4-[(benzylsulfonyl)carbamoyl]piperidin-1-yl}-5-fluoro-2-[(2-oxopyrrolidin-1-yl)methyl]nicotinate as a white solid的产率得到ethyl 6-{4-[(benzylsulfonyl)carbamoyl]piperidin-1-yl}-5-fluoro-2-[(2-oxopyrrolidin-1-yl)methyl]nicotinate