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US4328336A
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9-(β-D-Ribofurandsyl)purine-6-carboxamide and related compounds
Assignee: Bausch Health Americas Inc
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Filing: 1980-08-26
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Granted: 1982-05-04
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Expires: 2000-08-26
Abstract
Abstract Certain 9-(β-D-Ribofuranosyl)purine-6-carboxamide and other related compounds are prepared and are useful as antiviral agents.
Inventors
- 👤 Roland K. Robins
- 👤 Robert J. Rousseau
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 16:48
CPC Classifications
C; C07; C07H; C07H19/00; C07H19/02; C07H19/04; C07H19/16; C07H19/20
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A compound of the structure: wherein X is ##STR5## R is O or S, R 1 is H, Ac or PH(OH) 2 , R 2 is H or Ac and Ac is C 1 -C 18 acyl.
Claim 2
Dependent Claim
37 words
A compound of the structure: wherein X is ##STR5## R is O or S, R 1 is H, Ac or PH(OH) 2 , R 2 is H or Ac and Ac is C 1 -C 18 acyl.
Claim 3
Dependent Claim
9 words
A compound of claim 1 wherein: R is O.
Claim 4
Dependent Claim
9 words
A compound of claim 1 wherein: R is S.
Claim 5
Dependent Claim
19 words
A compound of claim 1 wherein: X is ##STR6## R is O and R 1 is PO(OH) 2 .
Claim 6
Dependent Claim
17 words
a compound of claim 1 wherein: X is ##STR7## and R 1 and R 2 are Ac.
Claim 7
Dependent Claim
9 words
A compound of claim 5 wherein: R is O.
Claim 8
Dependent Claim
9 words
A compound of claim 6 wherein: Ac is benzoyl.
References Cited (Backward Citations)
US3480613A
Cited
US3803126A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1985-05-03 | 1985-11-02 | 1986-05-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-05-03 | 1989-11-02 | 1990-05-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-05-03 | 1993-11-02 | 1994-05-04 | $7700.00 | Window Closed / Lapsed |