US3706789A
Expired / Lapsed
US
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Pgf{11 {60
Assignee: Individual
•
Filing: 1971-02-12
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Granted: 1972-12-19
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Expires: 1991-02-12
Abstract
Abstract The prostaglandins PGF2 Alpha and PGF2 Beta , and their salts, esters, and alkanoates are disclosed. These novel compounds are useful for a variety of pharmacological purposes, including use as smooth muscle stimulants and as cardiovascular agents.
Inventors
- 👤 Sune Bergstrom
- 👤 Jan Sjovall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 16:26
CPC Classifications
C; C12; C12P; C12P31/00; B; B01; B01J; B01J23/00; B01J23/38; B01J23/40; B01J23/42; C07; C07C; C07C405/00; C07C405/0008; C07C405/0016
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
22 words
A compound according to claim 1 wherein R1 is alkyl of one to eight carbon atoms, inclusive, and all R2 are hydrogen.
Claim 2
Dependent Claim
15 words
A compound according to claim 1 wherein R1 is methyl and all R2 are hydrogen.
Claim 3
Dependent Claim
24 words
A compound according to claim 1 wherein R1 is alkyl of one to eight carbon atoms, inclusive, and wherein all R2 are lower alkanoyl.
Claim 4
Dependent Claim
22 words
A compound according to claim 1 wherein R1 is alkyl of one to eight carbons, inclusive and wherein all R2 are acetyl.
Claim 5
Dependent Claim
15 words
A compound according to claim 1 wherein R1 is methyl and all R2 are acetyl.
Claim 6
Dependent Claim
20 words
A compound of the formula: wherein R3 is hydrogen or a pharmacologically acceptable cation, and wherein R4 is lower alkanoyl.
Claim 7
Dependent Claim
10 words
A compound according to claim 7 wherein R3 is hydrogen.
Claim 8
Dependent Claim
9 words
A compound in claim 8 wherein R4 is acetyl.
Claim 9
Dependent Claim
33 words
A compound of the formula: wherein R3 is hydrogen or a pharmacologically acceptable cation, said compound being essentially free of pyrogens, antigens, proteins, enzymes, cellular material, and other organic acids or salts thereof.
Claim 10
Dependent Claim
23 words
A compound according to claim 10 wherein R3 is hydrogen, said compound being 7-(3 Alpha ,5 Alpha -dihydroxy-2 Beta -((3S)-3-hydroxy-trans-1-octenyl)-1 Alpha -cyclopentyl)-cis-5-heptenoic acid.
Claim 11
Dependent Claim
29 words
A compound according to claim 10 wherein R3 is a pharmacologically acceptable cation, said compound being a salt of 7-(3 Alpha ,5 Alpha -dihydroxy)-2 Beta -((3S)-3-hydroxy-trans-1-octenyl)-1 Alpha -cyclopentyl)-cis-5-heptenoic acid.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-12-19 | 1976-06-19 | 1976-12-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-19 | 1980-06-19 | 1980-12-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-19 | 1984-06-19 | 1984-12-19 | $7700.00 | Window Closed / Lapsed |