[EN] NOVEL PROCESS FOR THE PREPARATION OF ASENAPINE<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION D'ASÉNAPINE
申请人:ALEMBIC PHARMACEUTICALS LTD
公开号:WO2013061247A1
公开(公告)日:2013-05-02
The present invention relates to a novel process for the preparation of trans-5-chloro-2- methyl-2,3,3a,12b- tetrahydro-1H-dibenz [2,3:6,7] oxepino[4,5-c] pyrrole (Asenapine) of formula (I). It also relates to novel intermediates i.e. 2-[(E)-2-(2-bromophenyl)ethenyl]-4-nitrophenyl acetate of formula (V), 2-[(3S,4S)-4-(2-bromophenyl)-1-methylpyrrolidin-3-yl]-4-nitrophenyl acetate of formula (VI), 2-[(3S,4S)-4-(2-bromophenyl)-1-methylpyrrolidin-3-yl]-4-nitrophenol of formula (VII), 5-nitro-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole of formula (VIII) and 5-amino-2-methyl-2,3,3a,12b-tetrahydro-1H-dibenz[2,3:6,7]oxepino[4,5-c]pyrrole of formula (IX) are useful for the preparation of Asenapine salts of formula (I).
本发明涉及一种制备式为(I)的trans-5-氯-2-甲基-2,3,3a,12b-四氢-1H-二苯并[2,3:6,7]氧杂[4,5-c]吡咯(阿塞那平)的新工艺。它还涉及新的中间体,即式(V)的2-[(E)-2-(2-溴苯基)乙烯基]-4-硝基苯乙酸酯,式(VI)的2-[(3S,4S)-4-(2-溴苯基)-1-甲基吡咯烷-3-基]-4-硝基苯乙酸酯,式(VII)的2-[(3S,4S)-4-(2-溴苯基)-1-甲基吡咯烷-3-基]-4-硝基苯酚,式(VIII)的5-硝基-2-甲基-2,3,3a,12b-四氢-1H-二苯并[2,3:6,7]氧杂[4,5-c]吡咯和式(IX)的5-氨基-2-甲基-2,3,3a,12b-四氢-1H-二苯并[2,3:6,7]氧杂[4,5-c]吡咯,可用于制备式(I)的阿塞那平盐。