1-{3-cyano-5-ethoxycarbonyl-6-[(2-ethoxy-2-oxoethyl)thio]pyridin-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-[(2-ethoxy-2-oxoethyl)thio]nicotinate的产率得到ethyl 6-(4-{[(2-chloro-4-fluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)-5-cyano-2-[(2-ethoxy-2-oxoethyl)thio]nicotinate