US4377704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hetero-prostaglandin derivatives and processes for preparing them
Assignee: Sanofi SA
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Filing: 1981-08-03
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Granted: 1983-03-22
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Expires: 2001-08-03
Abstract
Abstract Prostanoic acid derivatives represented by the general formula: <IMAGE> in which X represents hydrogen or hydroxy, X1 represents hydrogen or X and X1, when they are taken together with the carbon atom to which they are attached, represent a carbonyl group and Z represents hydrogen or hydroxy and pharmaceutically acceptable alkali metal salts thereof. They can be used as bronchodilators and/or inhibitors of blood-platelet aggregation.
Inventors
- 👤 Stephan Gero
- 👤 Jeanine Cleophax
- 👤 Jean-Claude Barriere
- 👤 Andre Cier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 04:25
CPC Classifications
C; C07; C07D; C07D409/00; C07D409/02; C07D409/04; A; A61; A61P; A61P43/00; C07C; C07C405/00; C07C405/0008; C07C405/0033; C07C43/00; C07C43/02; C07C43/18; C07C43/196; C07C45/00; C07C45/27; C07C45/29; C07C45/56; C07C45/57; C07C45/60; C07C45/61; C07C45/65; C07C45/66; C07C47/00; C07C47/38; C07C47/47; C07D319/00; C07D319/04; C07D319/06; C07D339/00; C07D339/02; C07D339/06; C07D495/00; C07D495/02; C07D495/10; C07C2601/00; C07C2601/06; C07C2601/10
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
53 words
A cyclopentene derivative represented by the formula: ##STR50## in which R represents a hydroxy-protecting group of the formula --CH 2 R 1 in which R 1 represents an phenyl or methylphenyl, B represents ##STR51## and A is such that: when B represents ##STR52## A represents ##STR53## when B represents ##STR54## A represents ##STR55##
Claim 2
Dependent Claim
53 words
A cyclopentene derivative represented by the formula: ##STR50## in which R represents a hydroxy-protecting group of the formula --CH 2 R 1 in which R 1 represents an phenyl or methylphenyl, B represents ##STR51## and A is such that: when B represents ##STR52## A represents ##STR53## when B represents ##STR54## A represents ##STR55##
Claim 3
Dependent Claim
12 words
A cyclopentene derivative according to claim 1 wherein R 1 is phenyl.
Claim 4
Dependent Claim
1 words
2-Formyl-4(R)-benzyloxy-2-cyclopentenoneethylenedithioacetal.
Claim 5
Dependent Claim
1 words
2-Formyl-4(R)-benzyloxy-2-cyclopentenoneethylenedithioacetal.
Claim 6
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenone-ethylenedithioacetal.
Claim 7
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenone-ethylenedithioacetal.
Claim 8
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenone.
Claim 9
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenone.
Claim 10
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenol.
Claim 11
Dependent Claim
1 words
2-Formylpropyleneacetal-4(R)-benzyloxy-2-cyclopentenol.
Claim 12
Dependent Claim
1 words
1-Formyl-3(R)-benzyloxy-1-cyclopentene.
Claim 13
Dependent Claim
1 words
1-Formyl-3(R)-benzyloxy-1-cyclopentene.
Claim 14
Dependent Claim
1 words
1-Formylpropyleneacetal-3(R)-benzyloxy-1-cyclopentene.
Claim 15
Dependent Claim
1 words
1-Formylpropyleneacetal-3(R)-benzyloxy-1-cyclopentene.
References Cited (Backward Citations)
US3664502A
Cited
US4229592A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-03-21 | 1986-09-20 | 1987-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-03-21 | 1990-09-20 | 1991-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-03-21 | 1994-09-20 | 1995-03-22 | $7700.00 | Window Closed / Lapsed |