Antiviral purine derivatives with improved gastrointestinal abso

Details Antiviral purine derivatives with improved gastrointestinal abso Antiviral purine derivatives with improved gastrointestinal abso

1992-05-21

1993-10-12

Berch, Mark L.

Drug, bio-affecting and body treating compositions

Designated organic active ingredient containing

Having -c-, wherein x is chalcogen, bonded directly to...

514262, 544276, 544277, 544323, 564301, A61K 3152, C07D47318, C07D47326

Patent

active

052525759

ABSTRACT:
Compounds of formula (I) and pharmaceutically acceptable salts thereof: ##STR1## wherein R.sub.1 is hydrogen or hydroxy; and

REFERENCES:
Chemical Abstracts, vol. 109, No. 15, abs. No. 129567p, from Harnden et al., Tetrahedron Lett. 1988, 29(6), 701-4.

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