US4128717A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Derivatives of 5,6-dihydrobenzo[5,6]cyclohepta[1,2-B]pyrazolo-[4,3-E]pyridin-11 (1H)-ones and 11 (1H)-imines
Assignee: ER Squibb and Sons LLC
•
Filing: 1977-07-20
•
Granted: 1978-12-05
•
Expires: 1997-07-20
Abstract
Abstract New derivatives of 5,6-dihydrobenzo[5,6]cyclohepta-[1,2-b]pyrazolo[4,3-e]pyridin-11 (1H)-ones and imines, respectively, have the general formula ##STR1## They and the salts thereof are useful as psychotropic and antiinflammatory agents.
Inventors
- 👤 Hans Hoehn
- 👤 Jack Bernstein
- 👤 B. Richard Vogt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:15
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
54 words
A compound of the formula ##STR22## wherein R 1 is lower alkyl, phenyl or phenyl-lower alkyl; R 2 is hydrogen, lower alkyl or phenyl; R 3 is piperazine or piperazine substituted with a lower alkyl or hydroxy-lower alkyl group; R 4 is oxo, lower alkylimino or phenylimino; and physiologically acceptable acid addition salts thereof.
Claim 2
Dependent Claim
54 words
A compound of the formula ##STR22## wherein R 1 is lower alkyl, phenyl or phenyl-lower alkyl; R 2 is hydrogen, lower alkyl or phenyl; R 3 is piperazine or piperazine substituted with a lower alkyl or hydroxy-lower alkyl group; R 4 is oxo, lower alkylimino or phenylimino; and physiologically acceptable acid addition salts thereof.
Claim 3
Dependent Claim
11 words
A compound as in claim 1 wherein R 3 is piperazino.
Claim 4
Dependent Claim
11 words
A compound as in claim 1 wherein R 4 is oxo.
Claim 5
Dependent Claim
12 words
A compound as in claim 1 wherein R 4 is lower alkylimino.
Claim 6
Dependent Claim
16 words
A compound as in claim 1 wherein R 1 is ethyl and R 2 is hydrogen.
Claim 7
Dependent Claim
13 words
A compound as in claim 1 wherein R 3 is (lower alkyl) piperazino.
Claim 8
Dependent Claim
12 words
A compound as in claim 1 wherein R 3 is (hydroxy-lower alkyl)piperazino.
Claim 9
Dependent Claim
17 words
A compound as in claim 1 wherein R 1 is lower alkyl and R 2 is hydrogen.
Claim 10
Dependent Claim
22 words
A compound as in claim 8 wherein the lower alkyl group is ethyl, R 3 is (2-hydroxyethyl)piperazino and R 4 is oxo.
Claim 11
Dependent Claim
22 words
A compound as in claim 8 wherein the lower alkyl group is ethyl, R 3 is (4-methyl)piperazino and R 4 is oxo.
References Cited (Backward Citations)
US4018779A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |