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    • 8. 发明申请
    • A PROCESS FOR PREPARING PAROXETINE HCl WHICH LIMITS FORMATION OF PINK COLORED COMPOUNDS
    • 用于制备限制形成粉红色染料的化合物的异柠檬酸盐的方法
    • WO2002102382A1
    • 2002-12-27
    • PCT/US2002/019016
    • 2002-06-14
    • TEVA PHARMACEUTICAL INDUSTRIES LTD.TEVA PHARMACEUTICALS USA, INC.AVRUTOV, IlyaPILARSKI, Gideon
    • AVRUTOV, IlyaPILARSKI, Gideon
    • A61K31/445
    • C07D405/12
    • The present invention provides a process for preparing paroxetine HCl from paroxetine base which provides paroxetine HCl substantially free of pink-colored compounds or an impurity identified by an HPLC RRT of about 1.5. The processes of the present invention utilize a buffer, a molar ratio of HCl to paroxetine base of less than one, and crystallize/recrystallize in the presence of an effective amount of an anti-oxidant. A preferred way to create a buffer is by using ammonium chloride. A preferred anti-oxidant is ascorbic acid. The present invention also provides for re-crystallizing paroxetine HCl prepared by the above methods or any other methods in the presence of an effective amount of an anti-oxidant such as ascorbic acid. A preferred solvent system for recrystallization is a mixture of acetone and methanol. Processes of the present invention can combine these various features.
    • 本发明提供了一种从帕罗西汀碱制备帕罗西汀HCl的方法,其提供基本上不含粉红色化合物的帕罗西汀HCl或通过约1.5的HPLC RRT鉴定的杂质。 本发明的方法利用缓冲液,HCl与帕罗西汀碱的摩尔比小于1,并在有效量的抗氧化剂存在下结晶/重结晶。 创建缓冲液的优选方法是使用氯化铵。 优选的抗氧化剂是抗坏血酸。 本发明还提供了通过上述方法或任何其它方法在有效量的抗氧化剂如抗坏血酸存在下制备的帕罗西汀HCl的再结晶。 用于重结晶的优选溶剂体系是丙酮和甲醇的混合物。 本发明的方法可以组合这些各种特征。