申请人:ZHEJIANG MEDICINE CO., LTD. XIANCHANG PHARMAUCEUTICAL FACTORY
公开号:US20160229859A1
公开(公告)日:2016-08-11
The present invention provides a method for preparing an intermediate compound of sitagliptin represented by formula I. The preparation method comprises: dissolving a compound represented by formula II into an organic solvent; and under the catalysis of fatty acid and effect of chlorosilane, performing a reduction reaction of carbon-carbon double bonds, so as to obtain the intermediate compound of sitagliptin represented by formula I, R being methyl or formoxyl. The preparation method of the present invention avoids precious metal as a catalyst, and accordingly, the cost is low, the post-treatment is simple, the product has a high yield, chemical purity and optical purity, and de % is greater than 99.6%, and the preparation method can be used in synthesis of sitagliptin and is suitable for industrial production.
本发明提供了一种制备西他列汀中间体化合物的方法,其表示为式I。制备方法包括:将式II表示的化合物溶解于有机溶剂中;在脂肪酸的催化作用和氯硅烷的影响下,进行碳-碳双键的还原反应,从而获得西他列汀中间体化合物,其表示为式I,其中R为甲基或甲氧基。本发明的制备方法避免了贵金属作为催化剂,因此成本低廉,后处理简单,产品产率高,化学纯度和光学纯度高,de%大于99.6%,该制备方法可用于西他列汀的合成,并适用于工业生产。