methyl 2-(2-methylbenzylidene)acetoacetate 、 (s)-t-butyl 2-[N-(3-amino-2-butenoyl)amino]acetate 在
silica gel 作用下,
反应 0.17h,
以whereby 308 mg (49.5%) of the captioned compound was obtained as an oily material的产率得到t-butyl 2-[N-[1,4-dihydro-2,6-dimethyl-5-methoxycarbonyl-4-(2-methylphenyl)pyridine-3-carbonyl]amino]acetate