Process for the preparation of arteethers from dihydroartemisinin
    4.
    发明授权
    Process for the preparation of arteethers from dihydroartemisinin 失效
    二氢青蒿素制备芳香醚的方法

    公开(公告)号:US06346631B1

    公开(公告)日:2002-02-12

    申请号:US09535513

    申请日:2000-03-24

    IPC分类号: C07D32102

    CPC分类号: C07D493/18

    摘要: The invention relates to an improved process for the preparation of arteether. The process comprises dissolving dihydroartemisinin in dry ethanol, adding a solid acid catalyst with trialkylorthoformate in the reaction mixture, stirring the reaction mixture at room temperature, adding H2O to the reaction mixture, extracting the reaction product with a non-polar organic solvent, and drying the solvent over anhydrous sodium sulphate and evaporating the solvent to obtain pure arteether.

    摘要翻译: 本发明涉及一种制备芳香醚的改进方法。 该方法包括将二氢青蒿素溶于无水乙醇中,在反应混合物中加入固体酸催化剂三烷基酯,室温搅拌反应混合物,向反应混合物中加入H 2 O,用非极性有机溶剂萃取反应产物,并干燥 溶剂用无水硫酸钠洗涤并蒸发溶剂,得到纯的芳香醚。