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公开(公告)号:EP1968934A1
公开(公告)日:2008-09-17
申请号:EP06711349.8
申请日:2006-01-02
申请人: Hetero Drugs Limited
发明人: PARTHASARADHI, Reddy, Bandi , RATHNAKAR, Reddy, Kura , RAJI, Reddy, Rapolu , MURALIDHARA, Reddy, Dasari , SUBASH CHANDER REDDY, Kesireddy
IPC分类号: C07C231/22
CPC分类号: C07C231/12 , C07C231/24 , C07C2601/16 , C07C233/52
摘要: The present invention provides a process for obtaining highly pure crystalline form of oseltamivir free base, thus, for example, suspending or dissolving impure or non-crystalline oseltamivir free base in a hydrocarbon solvent and then isolating crystals to obtain oseltamivir free base in well defined crystalline form. The present invention also provides a process for preparation of oseltamivir phosphate in high purity.
摘要翻译: 本发明提供了一种获得奥司他韦游离碱的高纯度结晶形式的方法,因此例如将不纯的或非结晶的奥司他韦游离碱悬浮或溶解在烃溶剂中,然后分离晶体以获得明确定义的结晶中的奥司他韦游离碱 形成。 本发明还提供了一种制备高纯度磷酸奥司他韦的方法。