An efficient synthesis has been developed for telmisartan. The key strategy is the construction of substituted bis-benzimidazole 11b by oxidative cyclization of substituted amidine 15 with bis(trifluoroacetoxy)iodobenzene. In this research, we provided telmisartan from the starting compound 12 in an overall yield of 61.5% by four steps while avoiding many issues previously reported.
替米沙坦的有效合成已经开发出来。关键策略是通过取代脒15与双(三
氟乙酰氧基)
碘苯的氧化环化反应构建取代双
苯并咪唑11b 。在这项研究中,我们通过四步从起始化合物12提供
替米沙坦,总收率为 61.5%,同时避免了之前报道的许多问题。