2-methyl-4-oxo-4H-chromen-8-carbaldehyde 、
乙酰丙酮 、
(3S)-1-benzyl-2,5-dioxopyrrolidin-3-yl (2E)-3-aminobut-2-enoate 以
异丙醇 为溶剂,
反应 16.0h,
以950 mg (33% of theory) of the desired product are obtained as 4R/4S diastereomer mixture的产率得到(3S)-1-benzyl-2,5-dioxopyrrolidin-3-yl (4R)-5-acetyl-2,6-dimethyl-4-(2-methyl-4-oxo-4H-chromen-8-yl)-1,4-dihydropyridine-3-carboxylate