申请人:Choi Kwang Do
公开号:US20110207930A1
公开(公告)日:2011-08-25
The present invention relates to an improved method of preparing adefovir dipivoxil of Formula 1. The method of the present invention is characterized by using dimethylsulfoxide as a reaction solvent, and comprises a process of preparing adefovir dipivoxil of Formula 1 by allowing adefovir of Formula 2 to react with chloromethylpivalate at a reaction temperature of 30 to 50° C. under the presence of dimethylsulfoxide and triethylamine solvents.
本发明涉及一种改进的制备Formula 1的阿德福韦二丙氧基的方法。本发明的方法特点在于使用二甲基亚砜作为反应溶剂,包括通过在30至50°C的反应温度下,在二甲基亚砜和三乙胺溶剂的存在下,使Formula 2的阿德福韦与氯甲基异丙酸酯反应,从而制备Formula 1的阿德福韦二丙氧基的过程。