4'-[[2-ethyl-4-methyl-6-(2-phenoxy-3-methylsulphonyl-isoureido)-1H-benzimidazol-1-yl]-methyl]-2-(1H-tetrazol-5-yl)-biphenyl 在
二甲胺 作用下,
以58%的产率得到4'-[[2-ethyl-4-methyl-6-(3,3-dimethyl-2-methylsulphonyl-guanidino)-1H-benzimidazol-1-yl]methyl]-2-(1H-tetrazol-5-yl)-biphenyl