(1-benzylpiperidin-3-yl) 2-[(2,3-dichlorophenyl)methylidene]-3-oxobutanoate 、 Carbamimidoyl-acetic acid isopropyl ester; compound with acetic acid 在
sodium methylate 作用下,
以
异丙醇 为溶剂,
以88%的产率得到2-Amino-4-(2,3-dichloro-phenyl)-6-methyl-1,4-dihydro-pyridine-3,5-dicarboxylic acid 5-(1-benzyl-piperidin-3-yl) ester 3-isopropyl ester