PROCESS FOR PURE MONTELUKAST SODIUM THROUGH PURE INTERMEDIATES AS WELL AS NOVEL AMINE SALTS
申请人:Satyanarayana Reddy Manne
公开号:US20100056793A1
公开(公告)日:2010-03-04
The present invention provides an improved process for the preparation of highly pure montelukast sodium through highly pure diol intermediate compound of formula (2) and (1)-(mercapto methyl)cyclopropane acetic acid methyl ester compound of formula (4) or mercaptomethyl cyclopropane acetic acid compound of formula (7). The present invention also provides novel organic amine salts of montelukast.