1-[3-cyano-5-(ethoxycarbonyl)-6-ethylpyridin-2-yl]piperidine-4-carboxylic acid 、
1-(4-fluoro-2-chlorophenyl)methanesulfonamide 以to give ethyl 6-(4-{[(2-chloro-4-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-ethylnicotinate的产率得到ethyl 6-(4-{[(2-chloro-4-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-ethylnicotinate