Disclosed is a method for preparing a montelukast sodium salt of Formula 1. The method includes coupling a methanesulfonyl compound of Formula 2 below with a compound of Formula 3 below in the presence of a bistrimethylsilylamide alkali metal salt, further adding an alkali metal base thereto and hydrolyzing the mixture by heating to prepare a compound of Formula 4 below, reacting the compound of Formula 4 with 4-tert-butylcyclohexylamine, followed by purification, to prepare an amine salt of Formula 5, and converting the amine salt of Formula 5 into a sodium salt.
本发明公开了一种制备Formula 1的蒙特卢卡斯特钠盐的方法。该方法包括在bistrimethylsilylamide碱
金属盐的存在下,将Formula 2的甲磺酰化合物与Formula 3的化合物偶联,进一步加入碱
金属碱基并加热
水解混合物以制备Formula 4的化合物,将Formula 4的化合物与
4-叔丁基环己基胺反应,经过纯化后制备Formula 5的胺盐,然后将Formula 5的胺盐转化为钠盐。