申请人:Chamorro Gutierrez Iolanda
公开号:US20080214822A1
公开(公告)日:2008-09-04
The present invention relates to a novel process for the preparation of montelukast sodium, a compound of Formula (1b) and precursors thereof. The invention further concerns the free acid of this compound in crystalline form, obtainable for the first time by the new process.
本发明涉及一种制备蒙特卢卡斯钠的新工艺,该化合物为公式(1b)及其前体化合物。本发明还涉及该化合物的晶体形式的自由酸,首次通过新工艺获得。