PROCESS FOR THE PREPARATION OF 2-METHYL-2'-PHENYLPROPIONIC ACID DERIVATIVES AND NOVEL INTERMEDIATE COMPOUNDS
申请人:Lee Chun-Ho
公开号:US20110009636A1
公开(公告)日:2011-01-13
The present invention relates to a process for preparing 2-methyl-2′-phenylpropionic acid derivatives showing antihistamine activity in more simplified way, intermediate compounds and their preparation processes used therefor. According to the present invention, pharmaceutically useful 2-methyl-2′-phenylpropionic acid derivatives can be prepared with high yield and purity on industrial scale.