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    • 3. 发明授权
    • Cefpodixime proxetil
    • 头孢泊肟酯
    • US07045618B2
    • 2006-05-16
    • US10469330
    • 2002-02-27
    • Yatendra KumarKaptan SinghRakesh Kumar Arora
    • Yatendra KumarKaptan SinghRakesh Kumar Arora
    • C07D501/34
    • C07D501/00
    • The present invention relates to an improved and cost effective process for the industrial manufacture of cefpodoxime proxetil. More specifically, the present invention relates to the preparation of cefpodoxime proxetil of high purity and yield. The process comprises a) dissolving impure cefpodoxime proxetil or adding a solution containing cefpodoxime proxetil into a polar organic solvent or mixture(s) thereof, optionally reducing the solvent by concentration, and adding into a non-polar organic solvent or mixture(s) thereof to precipitate the solid; and b) dissolving the solid obtained from the above step into water-miscible polar organic solvent, optionally reducing the solvent by concentration, adding it into water to obtain the pure cefpodoxime proxetil.
    • 本发明涉及一种改进和成本有效的工业制造头孢泊肟酯的方法。 更具体地,本发明涉及高纯度和产率的头孢泊肟酯的制备。 该方法包括:a)将不纯的头孢泊肟原料溶解或加入含有头孢泊肟酯的极性有机溶剂或其混合物,任选地通过浓缩来还原溶剂,并加入到非极性有机溶剂或其混合物中 沉淀固体; b)将上述步骤得到的固体溶解于水溶性极性有机溶剂中,任选地通过浓缩来还原溶剂,将其加入水中,得到纯头孢泊肟原料。