6-Carbamoylmethylsulfanyl-5-cyano-2-hydroxy-4-(4-nitro-phenyl)-2-phenyl-1,2,3,4-tetrahydro-pyridine-3-carboxylic acid ethyl ester 在
盐酸 作用下,
以
乙醇 为溶剂,
以75%的产率得到6-Carbamoylmethylsulfanyl-5-cyano-4-(4-nitro-phenyl)-2-phenyl-1,4-dihydro-pyridine-3-carboxylic acid ethyl ester