Methyl 2-n-butyl-3-{2'-(1H-tetrazol-5-yl)-biphenyl-4-yl}methyl-4,5,6,7-tetrahydroimidazo[4,5-c]-pyridine 6-carboxylate hydrochloride 、
氰乙酸 以to give methyl 2-n-butyl-5-cyanoacetyl-3-{2'-(1H-tetrazol-5-yl)-biphenyl-4-yl}methyl-4,5,6,7-tetrahydroimidazo[4,5-c]-pyridine-6-carboxylate的产率得到methyl 2-n-butyl-5-cyanoacetyl-3-{2'-(1H-tetrazol-5-yl)-biphenyl-4-yl}methyl-4,5,6,7-tetrahydroimidazo[4,5-c]-pyridine-6-carboxylate