2-[1-(3-Nitro-phenyl)-meth-(E)-ylidene]-3-oxo-butyric acid 1-pyridin-3-ylmethyl-piperidin-3-yl ester 、 2-(N-benzyl-N-methylamino)ethyl amidinoacetate acetic acid salt 在
sodium methylate 作用下,
以
异丙醇 为溶剂,
以63%的产率得到2-Amino-6-methyl-4-(3-nitro-phenyl)-1,4-dihydro-pyridine-3,5-dicarboxylic acid 3-[2-(benzyl-methyl-amino)-ethyl] ester 5-(1-pyridin-3-ylmethyl-piperidin-3-yl) ester