[EN] PROCESS FOR PREPARATION OF APREMILAST AND ITS INTERMEDIATES<br/>[FR] PROCÉDÉ DE PRÉPARATION DE L'APRÉMILAST ET DE SES INTERMÉDIAIRES
申请人:DR REDDY’S LABORATORIES LTD
公开号:WO2016199031A1
公开(公告)日:2016-12-15
Present application relates to the process for the preparation of 1-(3-Ethoxy-4-methoxy-phenyl)-2-methanesulfonyl-ethylamine of the formula (II), its resolution and its use in preparation of Apremilast of formula (I), process for the preparation of crystalline form B of apremilast, process for preparation of amorphous form of apremilast and the crystalline form of (S)-1-(3-Ethoxy-4-methoxy-phenyl)-2-methanesulfonyl-ethylamine of the formula (Va).
本申请涉及制备式(II)的1-(3-乙氧基-4-甲氧基苯基)-2-甲磺酸乙胺的过程,其拆分以及其在制备式(I)的阿普利法中的用途,阿普利法的结晶形式B的制备过程,阿普利法的非晶形式的制备过程,以及式(Va)的(S)-1-(3-乙氧基-4-甲氧基苯基)-2-甲磺酸乙胺的结晶形式。