Methods and compositions for treating viral infections and guanine acyclic nucleosides
First Claim
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1. A substituted purine of formula (I) ##STR12## wherein X is sulphur or oxygen;
- R1 is hydroxy, R2 is amino;
R3 is hydrogen, straight or branched chain or cyclic alkyl, hydroxyalkyl, benzyloxyalkyl or phenyl;
R4 is hydrogen, hydroxy, or lower alkyl;
R5 is hydrogen, hydroxy, amino, alkyl, hydroxyalkyl, benzoyloxy, benzoyloxyalkyl, benzyloxy, sulphamoyloxy, phosphate, carboxypropionyloxy, or acetoxy;
R6 is hydrogen, alkyl, hydroxyalkyl or a pharmaceutically acceptable salt thereof.
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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 formulation 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.
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Citations
81 Claims
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1. A substituted purine of formula (I) ##STR12## wherein X is sulphur or oxygen;
- R1 is hydroxy, R2 is amino;
R3 is hydrogen, straight or branched chain or cyclic alkyl, hydroxyalkyl, benzyloxyalkyl or phenyl;
R4 is hydrogen, hydroxy, or lower alkyl;
R5 is hydrogen, hydroxy, amino, alkyl, hydroxyalkyl, benzoyloxy, benzoyloxyalkyl, benzyloxy, sulphamoyloxy, phosphate, carboxypropionyloxy, or acetoxy;
R6 is hydrogen, alkyl, hydroxyalkyl or a pharmaceutically acceptable salt thereof. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 23, 24, 25, 26, 27, 28, 29, 30, 31, 38, 60, 61, 62, 69, 70, 71, 72, 73, 81)
- R1 is hydroxy, R2 is amino;
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11. A pharmaceutical composition which comprises an effective non-toxic antiviral treatment amount of a substituted purine of the formula (I) ##STR13## wherein X is sulphur or oxygen;
- R1 is hydroxy, R2 is amino;
R3 is hydrogen, straight or branched chain or cyclic alkyl, hydroxyalkyl, benzoylalkyl or phenyl;
R4 is hydrogen, hydroxy, or alkyl;
R5 is hydrogen, hydroxy, amino, alkyl, hydroxyalkyl, benzoyloxy, benzoyloxyalkyl, benzyloxy, sulphamoyloxy, phosphate, carboxypropionyloxy, or acetoxy;
R6 is hydrogen, alkyl, or hydroxyalkyl;
or a pharmaceutically acceptable salt thereof;
together with a pharmaceutically acceptable carrier therefor. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 21, 22, 52, 53, 54, 55, 56, 57, 58, 59, 74, 75, 76)
- R1 is hydroxy, R2 is amino;
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20. A purine selected from the group consisting of:
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9-(3-Benzoylpropoxymethyl)guanine 9-[1-(2-Hydroxyethoxy)ethyl]guanine 9-Ethoxymethylguanine and 9-(4-Hydroxy-n-butoxymethyl)guanine hemihydrate.
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32. 9-(2-Formyloxyethoxymethyl) guanine or a pharmaceutically acceptable salt thereof.
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33. A pharmaceutical composition comprising an effective non-toxic antiviral infection treatment amount of 9-(2-formyloxyethoxymethyl)guanine or a pharmaceutically acceptable salt thereof and a pharmaceutical acceptable carrier therefor.
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34. A method of treating a susceptible viral infection in a mammal which comprises administering an effective non-toxic anti-viral amount of 9-(2-formyloxyethoxymethyl)guanine or a pharmaceutically acceptable salt thereof to said mammal.
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35. The compound of the formula I ##STR14## wherein X is sulphur or oxygen, R1 is hydroxy;
- R2 is amino;
R3 is hydrogen, straight or branch chain or cyclic alkyl, hydroxyalkyl, benzyloxyalkyl or phenyl;
R4 is hydrogen, hydroxy or alkyl;
R5 is hydrogen, hydroxy, amino, alkyl, hydroxyalkyl, benzyloxy, benzoyloxy, benzoyloxymethyl, sulphamoyloxy, phosphate or straight chain or cyclic acyloxy having from 1 to 8 carbon atoms;
R6 is hydrogen or alkyl, or a pharmaceutically acceptable salt thereof. - View Dependent Claims (36, 37, 50, 51, 63, 64, 65, 66, 67, 68)
- R2 is amino;
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39. 9-(2-hydroxyethoxymethyl)guanine.
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40. A pharmaceutically acceptable salt of 9-(2-hydroxyethoxymethyl)guanine.
- 41. A pharmaceutical composition comprising an effective non-toxic antiviral treatment amount of 9-(2-hydroxyethoxymethyl) guanine or a pharmaceutically acceptable salt thereof together with a pharmaceutically acceptable carrier therefore.
- 45. The method of treating a susceptible viral infection in a mammal having said viral infection which comprises the administration of an effective antiviral non-toxic amount of 9-(2-hydroxyethoxymethyl)guanine or a pharmaceutically acceptable salt thereof.
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77. 9-[2-(3-carboxypropionyloxy)ethoxymethyl]guanine.
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78. A pharmaceutically acceptable salt of:
- 9-[2-(3-carboxypropionyloxy)ethoxymethyl]guanine.
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79. A pharmaceutical composition comprising an effective non-toxic antiviral infection treatment amount of 9-[2-(3-carboxypropionyloxy)ethoxymethyl]guanine or a pharmaceutically acceptable salt thereof.
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80. A method of treating a susceptible viral infection in a mammal which comprises administering an effective non-toxic antiviral amount of 9-[2-(3-carboxypropionyloxy)ethoxymethyl]guanine or a pharmaceutically acceptable salt thereof to said mammal.
Specification