It comprises new substituted 4-valinylmethylphenyl boronic acids of formula (II) and their derivatives and also its preparation process. It also comprises a preparation process of Valsartan (I) from such intermediates. The process comprises the reaction of the new 4-valinylmethylphenyl boronic compounds with a (halophenyl)tetrazole compound which proceeds with high yields. The process is particularly advantageous in its practical industrial realization because it avoids the use of azide derivatives and also the use of expensive biphenyl intermediates.
它包括公式(II)的新取代4-缬
氨酸甲基苯
硼酸及其衍
生物,以及其制备过程。它还包括从这种中间体制备
缬沙坦(I)的制备过程。该过程包括将新的4-缬
氨酸甲基苯
硼化合物与(卤代苯基)
四唑化合物反应,反应产率高。该过程在其实际工业实现中特别优越,因为它避免了使用
叠氮衍
生物和昂贵的
联苯中间体。