6-azido-2-fluoropurine, useful in the synthesis of nucleosides
申请人:Berlex Biosciences Inc.
公开号:US05180824A1
公开(公告)日:1993-01-19
This invention pertains to novel methods of synthesizing fludarabine, fludarabine phosphate and related nucleoside pharmacologic agents utilizing 6-azido-2-fluoropurine as a novel intermediate. In particular this invention pertains to a synthesis of fludarabine where the relatively low yield fluorination step is done before the costly coupling step.
申请人:Institute of Organic Chemistry and Biochemistry of the Academy of
公开号:US06057305A1
公开(公告)日:2000-05-02
Resolved enantiomers of the formula ##STR1## wherein B is a purine or pyrimidine base or aza and/or deaza analogs thereof are useful in antiviral pharmaceutical compositions to treat retroviral infections.