Method of preparing a polymorph of terfenadine
    1.
    发明授权
    Method of preparing a polymorph of terfenadine 失效
    特非那定多晶型物的制备方法

    公开(公告)号:US5347006A

    公开(公告)日:1994-09-13

    申请号:US999596

    申请日:1992-12-31

    IPC分类号: C07D211/22

    CPC分类号: C07D211/22

    摘要: The invention relates to a method for preparing HMP terfenadine comprising the steps of reacting terfenadone free-base with sodium borohydride to yield mixed polymorph terfenadine and crystallizing said mixed polymorph terfenadine from a seeded ester or ketone solvent system to yield substantially pure HMP terfenadine.

    摘要翻译: 本发明涉及一种制备HMP特非那定的方法,该方法包括以下步骤:使特非多定游离碱与硼氢化钠反应,得到混合多晶型特非那定,并从接种的酯或酮溶剂体系中结晶所述混合多晶型特非那定,得到基本上纯的HMP特非那定。