2-[1-(3-Nitro-phenyl)-meth-(E)-ylidene]-3-oxo-butyric acid 1-benzhydryl-piperidin-3-yl ester 、 Carbamimidoyl-acetic acid isopropyl ester; compound with acetic acid 在
sodium methylate 作用下,
以
异丙醇 为溶剂,
以62.3%的产率得到3-Isopropyl 5-(1-benzhydryl-3-piperidyl) 2-amino-6-methyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3,5-dicarboxylate