1-[3-cyano-5-(ethoxycarbonyl)-6-ethylpyridin-2-yl]piperidine-4-carboxylic acid 、 1-(2,3,6-Trifluorophenyl)methanesulfonamide 以to give ethyl 5-cyano-2-ethyl-6-(4-{[(2,3,6-trifluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)nicotinate的产率得到ethyl 5-cyano-2-ethyl-6-(4-{[(2,3,6-trifluorobenzyl)sulfonyl]carbamoyl}piperidin-1-yl)nicotinate