申请人:Civit Elisabeth Schuler
公开号:US20080234486A1
公开(公告)日:2008-09-25
The invention is directed to overcome the problems associated with the formation of rabeprazole sodium, i.e. formation of (2-([4-(3-methoxypropoxy)-3-methylpyridin-2-yl]methyl}sulfonyl)-1H-benzimidazole side product which is achieved by a process for the preparation of amorphous rabeprazole salt, e.g. sodium, comprising the steps of:
i) contacting rabeprazole salt complex, e.g. sodium acetone complex with a first solvent system;
ii) filtering the solid from the solvent system used in step i) or distilling, totally or partially, the solvent system used in step i) under reduced or atmospheric pressure, to thereby obtain a residue;
iii) contacting the solid or the residue of step ii) with a second solvent system;
v) filtering the solid from the solvent system used in step iii) or distilling, totally or partially, the solvent system used in step iii) under reduced or atmospheric pressure to thereby obtain a solid;
v) optionally repeating steps iii) and iv) one or more times;
vi) optionally filtering to obtain a wet solid; and
vii) drying the wet solid.
该发明旨在克服与拉贝拉唑钠的形成相关的问题,即通过制备非晶态拉贝拉唑盐(例如钠盐)的过程中形成(2-([4-(3-甲氧基丙氧基)-3-甲基吡啶-2-基]甲基}磺酰基)-1H-苯并咪唑)副产物的形成。该过程包括以下步骤:i)将拉贝拉唑盐复合物(例如钠丙酮复合物)与第一溶剂体系接触;ii)从步骤i)中使用的溶剂体系中过滤固体或在减压或常压下蒸馏该溶剂体系的全部或部分,以获得残留物;iii)将步骤ii)的固体或残留物与第二溶剂体系接触;v)从步骤iii)中使用的溶剂体系中过滤固体或在减压或常压下蒸馏该溶剂体系的全部或部分,以获得固体;v)可选地重复步骤iii)和iv)一次或多次;vi)可选地过滤以获得湿固体;和vii)干燥湿固体。