申请人:Naddaka Vladimir
公开号:US20070249823A1
公开(公告)日:2007-10-25
The present invention provides novel intermediates, which preferably include 3-substituted, alkyl 2,2-difluoro-3-hydroxy-3-(2,2-dialkyldioxolan-4-yl)-propionate derivatives, and 3,5-disubstituted-2-deoxy-2,2-difluoro-1-oxo-D-ribose derivatives. The present invention also provides processes for producing such intermediates and processes for producing gemcitabine therewith.
本发明提供了新颖的中间体,其中包括3-取代的烷基2,2-二氟-3-羟基-3-(2,2-二烷基二氧杂环戊酮-4-基)-丙酸酯衍生物,以及3,5-二取代-2-脱氧-2,2-二氟-1-氧代-D-核糖衍生物。本发明还提供了生产这种中间体的方法以及生产吉西他滨的方法。