US4002632A
Expired / Lapsed
US
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Tetracyclic piperidino derivatives
Assignee: Akzona Inc
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Filing: 1975-01-22
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Granted: 1977-01-11
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Expires: 1995-01-22
Abstract
Abstract The invention relates to antidepressive biologically active tetracyclic piperidino derivatives of the general formula: <IMAGE> I as well as the pharmaceutically acceptable salts and nitrogen oxides (N2) thereof, in which:
Inventors
- 👤 Willem Jacob van der Burg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:32
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; A; A61; A61P; A61P25/00; A61P25/24; A61P25/26; C07D221/00; C07D221/02; C07D221/04; C07D221/18
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
81 words
A compound of the formula: ##STR9## or a pharmaceutically acceptable salt or nitrogen oxide thereof, in which R 1 and R 2 represent hydroxy, halogen, alkyl (1-6 C), alkoxy (1-6 C), alkylthio (1-6 C) or trifluoromethyl, R 3 stands for hydrogen, alkyl (1-6 C) or aralkyl (7-10 C), X represents oxygen, sulphur, the group >NR 4 or methylene (CH 2 ), R 4 stands for hydrogen or alkyl (1-4 C) and r and r' represent the number 0, 1 or 2.
Claim 2
Dependent Claim
81 words
A compound of the formula: ##STR9## or a pharmaceutically acceptable salt or nitrogen oxide thereof, in which R 1 and R 2 represent hydroxy, halogen, alkyl (1-6 C), alkoxy (1-6 C), alkylthio (1-6 C) or trifluoromethyl, R 3 stands for hydrogen, alkyl (1-6 C) or aralkyl (7-10 C), X represents oxygen, sulphur, the group >NR 4 or methylene (CH 2 ), R 4 stands for hydrogen or alkyl (1-4 C) and r and r' represent the number 0, 1 or 2.
Claim 3
Dependent Claim
38 words
A compound according to claim 1 of the formula: ##STR10## or a pharmaceutically acceptable salt thereof, in which R 1 , R 2 , R 3 , r and r' have the meaning as described in claim 1.
Claim 4
Dependent Claim
38 words
A compound according to claim 1 of the formula: ##STR11## or a pharmaceutically acceptable salt thereof in which R 1 , R 2 , R 3 , r and r' have the meaning as described in claim 1.
Claim 5
Dependent Claim
38 words
A compound according to claim 1 of the formula: ##STR12## or a pharmaceutically acceptable salt thereof, in which R 1 , R 2 , R 3 , r and r' have the meaning as described in claim 1.
Claim 6
Dependent Claim
41 words
A compound according to claim 1 of the formula: ##STR13## or a pharmaceutically acceptable salt thereof in which X stands for methylene, or oxygen, r and r' for the number 0 or 1 and R 1 and R 2 for methyl.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-11 | 1980-07-12 | 1981-01-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-11 | 1984-07-12 | 1985-01-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-11 | 1988-07-12 | 1989-01-11 | $7700.00 | Window Closed / Lapsed |