反应详情

Proceeding as in Reference 23, but substituting 6-benzyloxy-5′-fluoro-5-formyl-2′-methoxybiphenyl-3-carboxylic acid methyl ester (1.3 g, 3.30 mmol) and 3,4-diaminobenzamidine hydrochloride (0.739 g, 3.96 mmol), gave 5-(5-carbamimidoyl-1H-benzoimidazol-2-yl)-5′-fluoro-6,2′-dihydroxy-biphenyl-3-carboxylic acid (0.780 g).