N-甲基-2-羟基乙胺 、 4'-[[2-n-propyl-4-methyl-6-(2-phenoxy-3-cyano-isoureido)-1H-benzimidazol-1-yl]-methyl]-2-(1H-tetrazol-5-yl)-biphenyl 以
异丙醇 为溶剂,
以47.5%的产率得到4'-[[2-n-Propyl-4-methyl-6-[2-cyano-3-(2-hydroxy-ethyl)-3-methyl-guanidino]-1H-benzimidazol-1-yl]-methyl]-2-(1H-tetrazol-5-yl)-biphenyl