Purine derivatives, process for their preparation, pharmaceutical compositions and intermediates
申请人:BEECHAM GROUP PLC
公开号:EP0413544B1
公开(公告)日:1997-01-02
US5252575A
申请人:——
公开号:US5252575A
公开(公告)日:1993-10-12
Antiviral purine derivatives with improved gastrointestinal absorption
申请人:Beecham Group p.l.c.
公开号:US05252575A1
公开(公告)日:1993-10-12
Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is hydrogen or hydroxy; and R.sub.2 is C.sub.1-6 alkyl; which are pro-drugs for 9-(3-hydroxyprop-1-oxy)guanine having antiviral activity, a process for their preparation and their use as pharmaceuticals.