US4187236A
Expired / Lapsed
US
⏱️ 0.0 years remaining
7-Oxabicycloheptane compounds
Assignee: ER Squibb and Sons LLC
•
Filing: 1978-11-06
•
Granted: 1980-02-05
•
Expires: 1998-11-06
Abstract
Abstract New 7-oxabicycloheptane compounds which have the general formula ##STR1## wherein each R is independently hydrogen or hydroxy, at least one R being hydroxy; R 1 is hydrogen or lower alkyl; R 3 is ##STR2## are useful as cardiovascular agents.
Inventors
- 👤 Peter W. Sprague
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 09:33
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
37 words
A compound having the structural formula ##STR73## and stereoisomers thereof, wherein each R is independently hydrogen or hydroxy, provided at least one R is hydroxy; R 1 is hydrogen or lower alkyl; and R 3 is ##STR74##
Claim 2
Dependent Claim
37 words
A compound having the structural formula ##STR73## and stereoisomers thereof, wherein each R is independently hydrogen or hydroxy, provided at least one R is hydroxy; R 1 is hydrogen or lower alkyl; and R 3 is ##STR74##
Claim 3
Dependent Claim
13 words
A compound in accordance with claim 1 wherein both R groups are hydroxy.
Claim 4
Dependent Claim
19 words
A compound in accordance with claim 1 wherein one R group is hydrogen and one R group is hydroxy.
Claim 5
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 1 is hydrogen.
Claim 6
Dependent Claim
13 words
A compound in accordance with claim 1 wherein R 1 is lower alkyl.
Claim 7
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 3 is ##STR75##
Claim 8
Dependent Claim
12 words
A compound in accordance with claim 1 wherein R 3 is ##STR76##
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) | 1983-02-04 | 1983-08-06 | 1984-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-02-04 | 1987-08-06 | 1988-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-02-04 | 1991-08-06 | 1992-02-05 | $7700.00 | Window Closed / Lapsed |