[EN] IMPROVED PROCESS FOR THE MANUFACTURE OF R-6-HYDROXY-8-[1-HYDROXY-2-[2-(4-METHOXYPHENYL)-1,1-DIMETHYLETHYLAMINOETHYL]-2H-1,4-BENZOXAZIN-3(4H)-ONE HYDROCHLORIDE<br/>[FR] PROCÉDÉ AMÉLIORÉ POUR LA FABRICATION DE R-6-HYDROXY-8-[1-HYDROXY-2-[2- (4-MÉTHOXYPHÉNYL)-1,1-DIMÉTHYLÉTHYLAMINOÉTHYL]-2H-1,4-BENZOXAZIN-3 (4H)-ONE CHLORHYDRATE
申请人:LESVI LABORATORIOS SL
公开号:WO2018114887A1
公开(公告)日:2018-06-28
The present invention provides an improved process for the manufacture (R)-6- hydroxy-8-[1-hydroxy-2-[2-(4-methoxyphenyl)-1,1-dimethyl-ethylamino-ethyl]-2H-1,4- benzoxazin-3(4H)-one, in high purity and high yield, through the use of 1,1-dimethyl-2- (4-methoxyphenyl)ethyl amine L-tartrate salt, 1,1-dimethyl-2-(4-methoxyphenyl)ethyl amine maletate salt or the camphorsulfonate salt of intermediate (4). The invention also relates to sais salts, to processes for preparing them and to their use for the manufacture of (R)-6-hydroxy-8-[1-hydroxy-2-[2-(4-methoxyphenyl)-1,1-dimethyl- ethylamino-ethyl]-2H-1,4-benzoxazin-3(4H)-one or a pharmaceutically acceptable salt thereof.
本发明提供了一种改进的制造(R)-6-羟基-8-[1-羟基-2-[2-(4-甲氧基苯基)-1,1-二甲基乙基氨基]乙基]-2H-1,4-苯并噁嗪-3(4H)-酮的工艺,通过使用1,1-二甲基-2-(4-甲氧基苯基)乙基胺L-酒石酸盐,1,1-二甲基-2-(4-甲氧基苯基)乙基胺马来酸盐或中间体(4)的樟脑磺酸盐,以高纯度和高产率制备该化合物。本发明还涉及这些盐的制备工艺及其用于制备(R)-6-羟基-8-[1-羟基-2-[2-(4-甲氧基苯基)-1,1-二甲基乙基氨基]乙基]-2H-1,4-苯并噁嗪-3(4H)-酮或其药学上可接受的盐的用途。