US4221912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dithio derivatives of 4,5-dihydro-1H-pyrrole-2-carboxylic acids and 1,4,5,6-tetrahydropyridine-2-carboxylic acids
Assignee: ER Squibb and Sons LLC
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Filing: 1979-08-22
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Granted: 1980-09-09
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Expires: 1999-08-22
Abstract
Abstract New mercaptoacyl derivatives of 4,5-dihydro-1H-pyrrole-2-carboxylic acids and 1,4,5,6-tetrahydropyridine-2-carboxylic acids having the general formula ##STR1## are useful as hypotensive agents.
Inventors
- 👤 Miguel A. Ondetti
- 👤 Michael E. Condon
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 00:00
CPC Classifications
C; C07; C07D; C07D207/00; C07D207/02; C07D207/18; C07D207/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
42 words
A compound of the formula ##STR12## wherein R and R 2 each is hydrogen or lower alkyl; R 1 is hydrogen, hydroxy, halogen or lower alkoxy; R 3 ##STR13## m and n each is 0 or 1; and physiologically acceptable salts thereof.
Claim 2
Dependent Claim
42 words
A compound of the formula ##STR12## wherein R and R 2 each is hydrogen or lower alkyl; R 1 is hydrogen, hydroxy, halogen or lower alkoxy; R 3 ##STR13## m and n each is 0 or 1; and physiologically acceptable salts thereof.
Claim 3
Dependent Claim
10 words
A compound as in claim 1 wherein m is 0.
Claim 4
Dependent Claim
10 words
A compound as in claim 1 wherein m is 1.
Claim 5
Dependent Claim
23 words
A compound as in claim 2 wherein each R is methyl; each R 1 and R 2 is hydrogen; and n is 1.
Claim 6
Dependent Claim
20 words
A compound as in claim 2 wherein R, R 1 and R 2 each is hydrogen; and n is 1.
References Cited (Backward Citations)
US4129566A
Cited
US4156084A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-09-09 | 1984-03-10 | 1984-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-09-09 | 1988-03-10 | 1988-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-09-09 | 1992-03-10 | 1992-09-09 | $7700.00 | Window Closed / Lapsed |