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Details for Patent: 4,294,831

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Details for Patent: 4,294,831

Title: Purine derivatives
Abstract:9-Hydroxyethoxymethyl (and related) derivatives of certain 6-, and 2,6-substituted purines have been discovered to have potent anti-viral activities. Novel compounds and their pharmaceutically acceptable salts, pharmaceutical formulations containing the compounds of this invention, and the treatment of viral infections with these formulations are all disclosed. 9-(2-hydroxyethoxymethyl) guanine and 2-amino-9-(2-hydroxyethoxymethyl)adenine are examples of especially active compounds of this invention.
Inventor(s): Schaeffer; Howard J. (Raleigh, NC)
Assignee: Burroughs Wellcome Co. (Research Triangle Park, NC)
Filing Date:Feb 01, 1978
Application Number:05/874,060
Claims:1. 9-(2-propionyloxyethoxymethyl)guanine.

2. A pharmaceutically acceptable salt of 9-(2-propionyloxythoxymethyl)guanine.

3. 9-[2(2,2-Dimethylpropionyloxy)ethoxymethyl]guanine or a pharmaceutically acceptable salt thereof.

4. The method of treating a susceptible viral infection in a mammal having said viral infection which comprises the administration of an effective antiviral nontoxic amount of 9-(2-propionyloxyethoxymethyl)guanine or a pharmaceutically acceptable salt thereof.

5. A pharmaceutical composition comprising an effective antiviral amount of 9-(2-propionyloxyethoxymethyl)guanine or a pharmaceutically acceptable salt thereof together with a pharmaceutically acceptable carrier therefore.

6. The method of treating a susceptible viral infection in a mammal having said viral infection which comprises the administration of an effective antiviral nontoxic amount of 9-[2-(2-Dimethylpropionyloxyethoxymethyl]guanine or a pharmaceutically acceptable salt thereof.

7. A pharmaceutical composition comprising an effective antiviral amount of 9-[2-(2,2-Dimethylpropionyloxyethoxymethyl]guanine or a pharmaceutically acceptable salt thereof together with a pharamaceutically acceptable carrier therefore.

8. The method according to claim 4 in which the treated viral infection is caused by a herpes virus.

9. The method according to claim 6 in which the treated viral infection is caused by a herpes virus.

10. 9-(2-acetyloxyethoxymethyl) guanine.

11. A pharmacuetically acceptable salt of 9-(2-acetyloxyethoxymethyl) guanine.

12. A pharmacuetical composition comprising an effective antiviral amount of 9-(2-acetyloxyethoxymethyl) guanine or a pharmacuetically acceptable salt thereof together with a pharmacuetically acceptable carrier therefore.

13. The method of treating a susceptable viral infection in a mammal having said viral infection which comprises the administration of an effective antiviral non toxic amount of 9-(2-acetyloxyethoxymethyl) guanine or a pharmacuetically acceptable salt thereof.

14. The method of claim 13 in which the viral infection is a herpes virus infection.
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