6-Amino-7-methyl-1H-benzimidazole-4-carbonitrile 、
4,5-二氢-2-(甲硫基)-1H-咪唑-1-羧酸甲酯 以to yield intermediate 2-(7-Cyano-4-methyl-1H-benzimidazol-5-yl-imino)-imidazolidine-1-carboxylic Acid Methyl Ester (30)的产率得到2-(7-Cyano-4-methyl-1H-benzimidazol-5-yl-imino)-imidazolidine-1-carboxylic Acid Methyl Ester