Novel Methods for Preparation of (+)-1-ethyl-4-[2-(4-morpholinyl)ethyl)-3,3-diphenyl-2-pyrrolidinone
申请人:Dax Scott L.
公开号:US20130109689A1
公开(公告)日:2013-05-02
The present invention includes a method of preparing a composition comprising (+)-doxapram or a salt thereof, wherein the composition is essentially free of (−)-doxapram or a salt thereof.
本发明涉及一种制备含有(+)-多沙帕姆或其盐的组合物的方法,其中该组合物基本上不含(-)-多沙帕姆或其盐。