Patent US4038308A successfully refreshed from Google Patents.
US4038308A
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Prostaglandin derivatives
Assignee: Wyeth LLC
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Filing: 1976-09-13
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Granted: 1977-07-26
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Expires: 1996-09-13
Abstract
Abstract Derivatives of 11-deoxy-PGE 1 and 11-deoxy-PGE 2 are prepared. These new compounds not heretofore found in nature possess various pharmacological activities, one of which is bronchodilation.
Inventors
- 👤 Donald P. Strike
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:07
CPC Classifications
C; C07; C07D; C07D317/00; C07D317/08; C07D317/72; C07C; C07C405/00
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
35 words
A chemical compound of the structure: ##STR10## wherein R is hydrogen, alkyl of from 1 to 6 carbon atoms, an alkali metal cation or a pharmacologically acceptable cation derived from ammonia or a basic amine.
Claim 2
Dependent Claim
35 words
A chemical compound of the structure: ##STR10## wherein R is hydrogen, alkyl of from 1 to 6 carbon atoms, an alkali metal cation or a pharmacologically acceptable cation derived from ammonia or a basic amine.
Claim 3
Dependent Claim
10 words
The chemical compound of claim 1 wherein R is hydrogen.
References Cited (Backward Citations)
US4001315A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-25 | 1981-01-24 | 1981-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-25 | 1985-01-24 | 1985-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-25 | 1989-01-24 | 1989-07-26 | $7700.00 | Window Closed / Lapsed |