申请人:Reddy Manne Satyanarayana
公开号:US20090012315A1
公开(公告)日:2009-01-08
A process for the preparation of pure Duloxetine hydrochloride comprises the steps of: a) reacting 1-(thiophen-2-yl)ethanone with dimethylamine hydrochloride, b) purifying the component in a solvent, c) reducing the component with an alkali metal borohydride, d) resolving the compound with a chiral acid, and treating the obtained compound with weak inorganic base, e) reacting the compound to give Duloxetine oxalate salt and f) converting the Duloxetine salt into its hydrochloride salt. Further the purifications of the obtained compound and of two intermediate products are described.
制备纯度杜氯西泮盐酸盐的过程包括以下步骤:a)将1-(噻吩-2-基)乙酮与盐酸二甲胺反应,b)在溶剂中纯化组分,c)用碱金属硼氢化物还原组分,d)用手性酸分离化合物,并用弱无机碱处理所得化合物,e)反应化合物得到杜氯西泮草酸盐,f)将杜氯西泮草酸盐转化为其盐酸盐。此外,还描述了所得化合物和两个中间产物的纯化过程。