[EN] NOVEL PROCESS FOR THE PREPARATION OF ETRAVIRINE<br/>[FR] NOUVEAU PROCÉDÉ DE PRÉPARATION D'ÉTRAVIRINE
申请人:MYLAN LAB LTD
公开号:WO2012147104A1
公开(公告)日:2012-11-01
The present invention relates to a novel process for the preparation of Etravirine, comprises; condensing ethyl cyanoacetate with N-cyanophenylguanidine to obtain -OH compound of formula (II), which is further converted to a leaving group of formula (III). Compound of formula (III) is optionally protected and brominated to yield compound of formula (IV). Condensation of formula (IV) with 3,5-dimethyl-4-hydroxybenzonitrile gives formula (VI), and an optional deprotection of formula (VI) results into Etravirine. The present invention further relates to process for purifying Etravirine. The present invention also provides novel intermediates of Etravirine.
本发明涉及一种用于制备依曲韦林的新型工艺,包括:将乙基氰乙酸酯与N-氰基苯基胍缩合,得到化合物的-OH的化合物(II)的公式,进一步转化为公式(III)的离去基团。公式(III)的化合物可选择保护并溴化以得到公式(IV)的化合物。公式(IV)与3,5-二甲基-4-羟基苯甲腈缩合得到公式(VI),对公式(VI)进行可选的去保护得到依曲韦林。本发明还涉及一种用于纯化依曲韦林的工艺。本发明还提供了依曲韦林的新型中间体。