Disclosed is a process for the preparation of montelukast sodium. The process comprises a) reacting 2-(2-(3(S)-(3-(2-(7-chloro-2-quinolinyl)-ethenyl)phenyl)-3-hydroxypropyl)phenyl)-2-propanol with methane sulfonyl chloride and coupling the resultant mesylate compound with 1-(mercaptomethyl)cyclopropane acetic acid in presence of a base and free alkali source followed by saltification with an amine in a single step reaction and b) converting the montelukast amine salt to montelukast sodium salt.
本发明揭示了一种制备蒙特卢卡斯
钠的方法。该方法包括a)将2-(2-(3(S)-(3-(2-(7-
氯-2-
喹啉基)-
乙烯基)苯基)-3-羟基丙基)苯基)-2-
丙醇与
甲烷磺酰氯反应,并在碱和自由碱源存在下将产生的
甲磺酸酯化合物与1-(巯基甲基)
环丙基乙酸偶联,然后在单步反应中与胺
盐酸化合成盐,并b)将蒙特卢卡斯胺盐转化为蒙特卢卡斯钠盐。