反应详情

Proceeding as in Reference 23, but substituting 3′-tert-butylsulfamoyl-5-formyl-6-(2-methoxyethoxymethoxy)-biphenyl-3-carboxylic acid methyl ester (1.64 g, 3.42 mmol, 1.0 eq.) and 3,4-diamino-benzamidine hydrochloride (638 mg, 3.42 mmol, 1.0 eq.), gave 5-(5-carbamimidoyl-1H-benzoimidazol-2-yl)-6-hydroxy-3′-sulfamoyl-biphenyl-3-carboxylic acid hydrochloride (650 mg) as a brown solid.