[EN] AN IN-SITU PROCESS FOR THE PREPARATION OF HIGHLY PURE MONTELUKAST SODIUM<br/>[FR] PROCÉDÉ IN SITU POUR LA PRÉPARATION DE MONTÉLUKAST SODIQUE HAUTEMENT PUR
申请人:MELODY HEALTHCARE PVT LTD
公开号:WO2014118796A1
公开(公告)日:2014-08-07
The present invention disclosed herein is a cost effective, in-situ process for the preparation of montelukast or its pharmaceutically acceptable salts of formula (1) by reacting optically pure (S)-1-3-[2-(7-chloroquinolin-2-yl)ethylene]-phenyl}-3-[2-(1-hydroxy-1-methyl ethyl) phenyl]-propan-I-ol with methane sulfonyl chloride to afford mesylate derivative of formula (2) substantially free of impurities; followed by insitu condensing the same with disodium salt of mercapto-cyclopropyl acetic acid of formula (3) to afford montelukast free acid in good yield and purity, then converting the montelukast free acid into its substituted amine salt of formula (4). Further the montelukast substituted amine is converted into its pharmaceutically acceptable salt.
本发明公开了一种成本效益高的原位制备montelukast或其药学上可接受的盐的方法,通过将光学纯的(S)-1-3-[2-(7-氯喹啉-2-基)乙烯]-苯基}-3-[2-(1-羟基-1-甲基乙基)苯基]-丙烷-1-醇与甲磺酰氯反应,得到几乎不含杂质的mesylate衍生物,其化学式为(2);然后在原位与化学式为(3)的巯基环丙基乙酸二钠盐缩合,得到高收率和纯度的montelukast游离酸,然后将montelukast游离酸转化为其取代胺盐,化学式为(4)。进一步将montelukast取代胺转化为其药学上可接受的盐。