US 5,206,244 AGranted

Hydroxymethyl (methylenecyclopentyl) purines and pyrimidines

AssigneeE. R. Squibb & Sons, Inc.

InventorsRobert Zahler, William A. Slusarchyk

Life of this patent

Estimating the term…

Antiviral activity is exhibited by compounds having the formula ##STR1## and its pharmaceutically acceptable salts.

Dependent claims

A compound having the formula ##STR101## or a pharmaceutically acceptable salt thereof wherein R.sub.1 is ##STR102## R.sub.4 is alkyl;

R.sub.5 is hydrogen, alkyl, substituted alkyl, or aryl;
and
R.sub.6 and R.sub.7 are independently hydrogen, --PO.sub.3 H.sub.2, or ##STR103##

Dependencies are inferred from the claim text.

C07D 239/47
Two or more oxygen, sulphur or nitrogen atoms: one nitrogen atom and one oxygen or sulfur atom, e.g. cytosine
A61P 31/00
Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics
A61P 31/12
Antiinfectives, i.e. antibiotics, antiseptics, chemotherapeutics: antivirals
C07D 239/54
Two oxygen atoms: as doubly bound oxygen atoms or as unsubstituted hydroxy radicals

From the US filing history. Foreign family members aren’t listed.

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