申请人:Shanghai Aurisco International Trading Co., Ltd.
公开号:EP1887013A1
公开(公告)日:2008-02-13
This invention provides a method for preparing didanosine. The method comprises removing a protecting group in position 5' of compound II by hydrolysis under basic reaction conditions, and simultaneously enolizing of the carbonyl group of the purine ring to obtain a stable salt, and then producing the salt of 2',3-dideoxyinosine through catalytic hydrogenation, which salt is finally converted with acid to yield the finished product.
这项发明提供了一种制备地达诺辛的方法。该方法包括在碱性反应条件下通过水解去除化合物II的5'位保护基,同时使嘌呤环的羰基发生烯醇化以获得稳定的盐,然后通过催化氢化产生2',3'-二脱氧肌苷的盐,最终将该盐与酸反应转化为最终产品。