2-cyanoethyl 2-[4-(6-oxo-1,4,4,6-tetrahydropyridazin-3-yl)phenyl]ethyl 1,4-dihydro-2,6-dimethyl-4-(2-pyrid-2-yl-ethyl)-pyridine-3,5-dicarboxylate 在
sodium hydroxide 作用下,
以
乙二醇二甲醚 、
水 为溶剂,
以82%的产率得到Mono-2-[4-(6-oxo-1,4,5,6-tetrahydropyridazin-3-yl)phenyl]ethyl 1,4-dihydro-2,6-dimethyl-4-(2-pyrid-2-yl-ethyl)pyridine-3,5-dicarboxylate