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US4451478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Imidazole compounds
Assignee: Newport Pharmaceuticals International Inc
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Filing: 1982-03-12
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Granted: 1984-05-29
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Expires: 2002-03-12
Abstract
Abstract There are prepared compounds of the formulae ##STR1## where R is lower alkyl, chlorine, or bromine and n is an integer from 1 to 5. The compounds of formula (1) can be used to make erythro-9-(2-hydroxy-3-nonyl) hypoxanthine and its homologues and also to make the compounds of formulae (2) and (3). All three classes of compounds are useful as immunomodulators.
Inventors
- 👤 Lionel N. Simon
- 👤 Hans-Rudolf Mueller
- 👤 Hans Zutter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:58
CPC Classifications
C; C07; C07D; C07D473/00; C07D233/00; C07D233/54; C07D233/66; C07D233/90
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
6 words
A compound having the formula ##STR7##
Claim 2
Dependent Claim
6 words
A compound having the formula ##STR7##
Claim 3
Dependent Claim
10 words
A compound according to claim 1 wherein n is 5.
Claim 4
Dependent Claim
20 words
A process of imparting immunomodulating activity to a mammal comprising administering to the mammal a compound according to claim 1.
Claim 5
Dependent Claim
10 words
A process according to claim 3 wherein n is 5.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-05-29 | 1987-11-28 | 1988-05-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-05-29 | 1991-11-28 | 1992-05-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-05-29 | 1995-11-28 | 1996-05-29 | $7700.00 | Window Closed / Lapsed |