The present invention provides compounds, pharmaceutically acceptable compositions thereof, and methods of using the same.
本发明提供了化合物、药学上可接受的组合物以及使用它们的方法。
[EN] AN IMPROVED PROCESS AND NOVEL POLYMORPHIC FORM OF APREMILAST<br/>[FR] PROCÉDÉ AMÉLIORÉ ET NOUVELLE FORME POLYMORPHE D'APRÉMILAST
申请人:ALEMBIC PHARMACEUTICALS LTD
公开号:WO2017085568A1
公开(公告)日:2017-05-26
The present invention provides an improved process for the preparation of Apremilast using novel intermediates. The present invention also relates to the novel crystalline polymorphic form of Apremilast.
本发明提供了一种利用新型中间体制备阿普利法酯的改进工艺。本发明还涉及阿普利法酯的新型结晶多形形式。
[EN] PROCESS FOR PREPARATION OF APREMILAST<br/>[FR] PROCÉDÉ DE PRÉPARATION D'APRÉMILAST
申请人:GLENMARK PHARMACEUTICALS LTD
公开号:WO2017033116A1
公开(公告)日:2017-03-02
The present invention relates to a process for preparation of apremilast. The present invention relates to p-xylene solvate of apremilast and process for its preparation.
[EN] AN IMPROVED PROCESS FOR THE PREPARATION OF APREMILAST AND ITS INTERMEDIATE<br/>[FR] PROCÉDÉ AMÉLIORÉ DE PRÉPARATION D'APRÉMILAST ET DE SON INTERMÉDIAIRE
申请人:PIRAMAL ENTPR LTD
公开号:WO2019073431A1
公开(公告)日:2019-04-18
The present invention provides an improved process for preparation of pure N-(2-(l-(3- ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethyl)-l,3-dioxoisoindolin-4-yl)acetamide (1) (commonly known as Apremilast); wherein the content of des-acetyl apremilast (la) is less than 1% w/w and having total amount of genotoxic substances less than 25 ppm; comprising the steps of reacting the compound l-(3-ethoxy-4-methoxyphenyl)-2-(methylsulfonyl)ethan- 1-amine (A) or its chiral acid salt with N-(l,3-dioxo-l,3-dihydroisobenzofuran-4-yl)-acetamide (B) in presence of ether or amide solvent and optionally, in presence of an acid; followed by the treatment with an acetylating agent.