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 、
丙二酸单苯甲酯 以to give methyl 2-n-butyl-5-benzyloxycarbonylacetyl-3 -{2'-(1H-tetrazol-5-yl)biphenyl-4-yl}methyl-4,5,6,7-tetra-hydroimidazo[4,5-c]pyridine-6-carboxylate的产率得到methyl 2-n-butyl-5-benzyloxycarbonylacetyl-3-{2'-(1H-tetrazol-5-yl)biphenyl-4-yl}methyl-4,5,6,7-tetra-hydroimidazo[4,5-c]pyridine-6-carboxylate