Polymorphic forms of olopatadine hydrochloride and methods for producing olopatadine and salts thereof
申请人:Bader Thomas
公开号:US20070232814A1
公开(公告)日:2007-10-04
The present invention provides a novel polymorphic form of olopatadine hydrochloride ([(Z)-3-(dimethylamino)propylidene]-6,11-dihydrodibenz[b,e]oxepin-2-acetic acid hydrochloride), a selective histamine H1-receptor antagonist that is used for the treatment of ocular symptoms of seasonal allergic conjunctivitis. The present invention also provides novel methods for producing olopatadine on a large scale, and in a manner that is cost effective, provides a low level of impurities and eliminates the need to use the costly and dangerous base, butyllithium, which is used in prior art reactions for making olopatadine. The present invention further provides novel processes for carrying out a large scale production of 3-dimethylaminopropyltriphenylphosphonium bromide and its corresponding hydrobromide salt, which are employed in the production of olopatadine, and pharmaceutically acceptable salts of olopatadine.
本发明提供了奥洛帕坦盐酸盐([(Z)-3-(二甲氨基)丙烯基]-6,11-二氢二苯并[b,e]噁啶-2-乙酸盐),这是一种选择性组织胺H1受体拮抗剂,用于治疗季节性过敏性结膜炎的眼部症状的新颖多形态形式。本发明还提供了一种新颖的大规模生产奥洛帕坦的方法,以一种具有成本效益、提供低水平杂质并消除使用昂贵且危险的丁基锂的需要的方式进行,而在制备奥洛帕坦的现有技术反应中使用了丁基锂。本发明还提供了用于进行大规模生产3-二甲氨基丙基三苯基磷溴化铵及其相应的氢溴酸盐的新颖工艺,这些工艺用于奥洛帕坦的生产以及奥洛帕坦的药用可接受盐。