1-[3-cyano-5-(ethoxycarbonyl)-6-ethylpyridin-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-ethylnicotinate的产率得到ethyl 6-(4-{[(4-chloro-2-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-ethylnicotinate