N 4 -acylcytosine nucleosides for treatment of viral infections

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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C544S318000, C536S026800

Reexamination Certificate

active

07105527

ABSTRACT:
The present invention is directed to a method and composition of treating or preventing viral infections, in particular, human immunodeficiency virus (HIV) and hepatitis B virus (HBV) infections, in human patients or other animal hosts, comprising the administration of N4-acyl-2′,3′-dideoxy-5-fluorocytidine or N4-acyl-2′,3′-didehydro-2′,3′-dideoxy-5-fluorocytidine, and pharmaceutically acceptable salts, prodrugs, and other derivatives thereof.

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