申请人:Kim Young-Deuck
公开号:US20110040097A1
公开(公告)日:2011-02-17
Disclosed herein is a novel method for preparing lercanidipine hydrochloride which is highly effective for treating hypertension. The method comprises the steps of reacting 2,6-dimethyl-5-methoxycarbonyl-4-(3-nitrophenyl)-1,4-dihydropyridine-3-carboxylic acid with a substituted chlorophosphate derivative to obtain a substituted phosphonoester derivative, and reacting the substituted phosphonoester derivative with 2, N-dimethyl-N-(3,3-diphenylpropyl)-1-amino-2-propanol. According to the preparation method, since little by-products are formed, the yield is improved, as compared to cases of conventional methods. In addition, the method involves simple isolation and purification processes of lercanidipine, thus realizing a high-quality product. Furthermore, the method has advantages of low preparation costs, substantial waste-free environmental-friendly process and applicability to industrial mass-production.
本文公开了一种制备对治疗高血压具有高效作用的盐酸勒贺他平的新方法。该方法包括以下步骤:将2,6-二甲基-5-甲氧羰基-4-(3-硝基苯基)-1,4-二氢吡啶-3-羧酸与取代的氯代磷酸酯衍生物反应以得到取代的磷酸酯衍生物,然后将取代的磷酸酯衍生物与2,N-二甲基-N-(3,3-二苯基丙基)-1-氨基-2-丙醇反应。根据该制备方法,与传统方法相比,由于产生的副产物较少,因此提高了产率。此外,该方法涉及到勒贺他平的简单分离和纯化过程,从而实现了高质量的产品。此外,该方法具有制备成本低、几乎无废弃物的环保过程和适用于工业大规模生产的优点。