US3862979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
9-desoxy-prosta-5,9(10),13-trienoic acid derivatives
Assignee: Pfizer Italia SRL
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Filing: 1973-06-04
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Granted: 1975-01-28
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Expires: 1993-06-04
Abstract
Abstract This invention relates to 9-desoxy-prosta-5,9 (10),13- 13trienoic acid derivatives, to processes for making them and to pharmaceutical compositions containing them.
Inventors
- 👤 Carmelo Gandolfi
- 👤 Gianfederico Doria
- 👤 Pietro Gaio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:29
CPC Classifications
C; C07; C07D; C07D309/00; C07D309/02; C07D309/08; C07D309/10; C07D309/12; C07C; C07C405/00; C07C405/0008; C07C405/0016; C07D319/00; C07D319/10; C07D319/12
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
A compound selected from the group consisting of: 5c,13t-11 Alpha ,15S-dihydroxy-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-16R-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-16S-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-16,16-dimethyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-20 omega -homo-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha -dihydroxy-20 omega -dihomo-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-15R-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-16R-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-16S-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-16,16-dimethyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-20 omega -homo-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-20 omega -dihomo-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-15S-methyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-16S-isopropyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-16R-isopropyl-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-3-oxa-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15S-dihydroxy-16,16-dimethyl-3-oxa-prosta-5,9, 13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-3-oxa-prosta-5,9,13-trienoic acid; 5c,13t-11 Alpha ,15R-dihydroxy-16,16-dimethyl-3-oxa-prosta-5,9, 13-trienoic acid; either as free acids or as their methylesters.
Claim 2
Dependent Claim
33 words
Derivatives of claim 1, wherein R2 is a hydroxy group, one of R3 and R4 is a hydroxy group and the other is a hydrogen atom, and R5 and R6 are hydrogen atoms.
Claim 3
Dependent Claim
10 words
Compound of claim 2, wherein said compound is 5c,13t-11a,15S-dihydroxy-15R-methyl-prosta-5,9,13-trienoic acid.
References Cited (Backward Citations)
US3728382A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-01-27 | 1978-07-29 | 1979-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-01-27 | 1982-07-29 | 1983-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-01-27 | 1986-07-29 | 1987-01-28 | $7700.00 | Window Closed / Lapsed |