A process for preparing (+)duloxetine, or an acid addition salt thereof, which process comprises resolving racemic (±)duloxetine with a chiral acid so as to obtain a salt of the chiral acid and (+)duloxetine, substantially free of (-)duloxetine; and (ii) if desired, converting the salt prepared in step (i) to the free base or another acid addition salt as appropriate. The process for preparing (+)duloxetine, or an acid addition salt thereof, can further comprise an O-alkylation intermediate process step which is carried out in the presence of a base and a phase transfer catalyst.
一种制备(+)
度洛西汀或其酸盐的方法,该方法包括用手性酸使光学异构体(±)
度洛西汀分离,从而获得手性酸盐和(+)
度洛西汀的盐,基本上不含(-)
度洛西汀;以及(ii)如有需要,将步骤(i)中制备的盐转化为自由碱或其他适当的酸盐。制备(+)
度洛西汀或其酸盐的方法还可以包括在碱和相转移催化剂存在的情况下进行的O-烷基化中间步骤。