Process for purifying N-[3-(3-cyanopyrazolo[1,5-a]pyrimidin-7-yl)phenyl]-N-ethylacetamide(zaleplon) and crystalline forms of zaleplon accessible with the process
申请人:TEVA Gyógyszergyár Zártköruen Muködö Részvénytársaság
公开号:US07348429B2
公开(公告)日:2008-03-25
Provided are novel Zaleplon crystalline Forms II, III, IV and V, which are useful for the treatment of insomnia. Also provided are processes for making Forms I, II, and V using precipitation methods.
本发明提供了新型Zaleplon晶体形式II、III、IV和V,可用于治疗失眠。同时,本发明还提供了使用沉淀法制备形式I、II和V的方法。