1-{3-cyano-5-(ethoxycarbonyl)-6-[(2-oxo-pyrrolidin-1-yl)methyl]pyridin-2-yl}piperidine-4-carboxylic acid 、
Oxan-4-ylmethanesulfonamide 以to give ethyl 5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]-6-(4-{[(tetrahydro-2H-pyran-4-ylmethyl)sulfonyl]carbamoyl}piperidin-1-yl)nicotinate的产率得到ethyl 5-cyano-2-[(2-oxopyrrolidin-1-yl)methyl]-6-(4-{[(tetrahydro-2H-pyran-4-ylmethyl)sulfonyl]carbamoyl}piperidin-1-yl)nicotinate