申请人:Ray Purna Chandra
公开号:US20080312428A1
公开(公告)日:2008-12-18
The present invention provides a method for preparing pure Stavudine having purity more than 99.5% comprises: i) Converting 3′,5′-anhydrothymidine to crude Stavudine, ii) Converting crude Stavudine to stable solvates of Stavudine, iii) Desolvation of the solvates to give pure Stavudine. The present invention also disclosed novel solvates of Stavudine and conversion of novel Stavudine solvates to Stavudine.
本发明提供了一种制备纯度大于99.5%的
司他夫定的方法,包括:i)将3',5'-去氧
胸苷转化为粗
司他夫定,ii)将粗
司他夫定转化为稳定的
司他夫定溶剂合物,iii)去除溶剂合物以得到纯
司他夫定。本发明还披露了
司他夫定的新型溶剂合物和将新型
司他夫定溶剂合物转化为
司他夫定的方法。