申请人:Yoshitomi Pharmaceutical Industries, Ltd.
公开号:US06066739A1
公开(公告)日:2000-05-23
The present invention provides a method for producing an optically active 4-[.alpha.-hydro-5-(1-imidazolyl)-2-methylbenzyl]-3,5-dimethylbenzoic acid or a pharmaceutically acceptable salt thereof, which includes subjecting a compound of the formula (I) ##STR1## wherein each symbol in the formula is as defined in the specification, to optical resolution by fractional crystallization to give an optically active compound thereof and subjecting the compound to hydrolysis reaction. According to this method, a resolution method useful for industrial large-scale production of the optically active compound of 4-[.alpha.-hydroxy-5-(1-imidazolyl)-2-methylbenzyl]-3,5-dimethylbenzoic acid, which is useful as a thromboxane synthetase inhibitor and an agent for the prophylaxis and treatment of diabetic complications, can be obtained.
本发明提供了一种生产光学活性4-[α-羟基-5-(1-咪唑基)-2-甲基苄基]-3,5-二甲基苯甲酸或其药用可接受盐的方法,包括将式(I)的化合物##STR1##其中方程式中的每个符号如规范中定义,通过分级结晶进行光学分辨,得到其光学活性化合物,并将该化合物进行水解反应。根据该方法,可以获得一种用于工业大规模生产4-[α-羟基-5-(1-咪唑基)-2-甲基苄基]-3,5-二甲基苯甲酸的光学活性化合物的分辨方法,该化合物可用作血栓素合酶抑制剂和糖尿病并发症的预防和治疗药物。