US3965143A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16-Oxygenated prostanoic acid derivatives
Assignee: GD Searle LLC
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Filing: 1974-03-26
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Granted: 1976-06-22
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Expires: 1994-03-26
Abstract
Abstract 16-Oxygenated prostanoic acid derivatives, displaying valuable pharmacological properties, e.g. gastric anti-secretory, are produced by reaction of an (optionally 3-oxygenated)-5-oxocyclopent-1-enealkanoic/alkenoic acid or ester with the appropriate organometallic reagent.
Inventors
- 👤 Paul W. Collins
- 👤 Raphael Pappo
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 22:43
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; A; A61; A61P; A61P43/00; C07C; C07C405/00; C07F; C07F7/00; C07F7/02; C07F7/08; C07F7/18; C07F7/1804; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
7 words
The compound which is racemic methyl 7-[3(R)-hydroxy-2β-(4(RS)-4-hydroxy-4-methyl-trans-1-octenyl)-5-oxocyclopentane]-1α-heptanoate.
Claim 2
Dependent Claim
7 words
The compound which is racemic methyl 7-[3(R)-hydroxy-2β-(4(RS)-4-hydroxy-4-methyl-trans-1-octenyl)-5-oxocyclopentane]-1α-heptanoate.
Claim 3
Dependent Claim
7 words
The compound which is racemic methyl 7-[3(S)-hydroxy-2β-(4(RS)-4-hydroxy-4-methyl-1-octynyl)-5-oxocyclopentane]-1α-heptanoate.
Claim 4
Dependent Claim
7 words
The compound which is racemic methyl 7-[3(S)-hydroxy-2β-(4(RS)-4-hydroxy-4-methyl-1-octynyl)-5-oxocyclopentane]-1α-heptanoate.
Claim 5
Dependent Claim
7 words
The compound which is racemic methyl 7-[3(R)-hydroxy-2β-(4(RS)-4-cyclohexylmethyl-4-hydroxy-4-methyl-trans-1-butenyl)-5-oxocyclopentane]-1α-heptanoate.
Claim 6
Dependent Claim
7 words
The compound which is racemic methyl 7-[3(R)-hydroxy-2β-(4(RS)-4-cyclohexylmethyl-4-hydroxy-4-methyl-trans-1-butenyl)-5-oxocyclopentane]-1α-heptanoate.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-06-22 | 1979-12-22 | 1980-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-06-22 | 1983-12-22 | 1984-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-06-22 | 1987-12-22 | 1988-06-22 | $7700.00 | Window Closed / Lapsed |