Nucleosides and related processes, pharmaceutical...

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Carbohydrate doai

Reexamination Certificate

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C514S045000, C514S256000, C514S269000, C514S274000, C514S300000, C536S025300, C536S028100, C536S028200, C536S028400, C536S028500, C536S022100, C536S024300, C536S024500, C536S026230, C536S026260, C536S026700, C536S026800, C536S027140, C536S028540, C544S314000

Reexamination Certificate

active

06960568

ABSTRACT:
The invention provides novel nucleosides and related processes, pharmaceutical compositions, and methods. The novel nucleosides are useful in a wide variety of antiviral, antineoplastic, and antibacterial applications. Preferred embodiments of the instant invention include novel 2 halogen-substituted, 3 halogen-substituted, and 2′,3′dihalogen-substituted analogues of 3-deazaadenosine, and novel 3 halogen-substituted analogues of 3-deazaguanosine. Compounds of the instant invention, including 4-Amino-6-fluoro-1-(β-D-ribofuranosyl)imidazo[4,5-c]pyridine and 6-Amino-7-bromo-1,5-dihydro-1-β-D-ribofuranosylimidazo[4,5-c]pyridin-4-one, have exhibited potent antiviral and anticancer activity in vitro. The compounds are also useful in the concomitant treatment of bacterial infections associated with viral infections such as AIDS.

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