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US3951987A
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Tetrahydropyridine derivatives
Assignee: Hoffmann La Roche Inc
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Filing: 1975-01-13
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Granted: 1976-04-20
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Expires: 1995-01-13
Abstract
Abstract Tetrahydropyridine derivatives and processes for the preparation thereof are disclosed. These tetrahydropyridine compounds are useful as psychosedative agents.
Inventors
- 👤 Albrecht Edenhofer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:37
CPC Classifications
C; C07; C07D; C07D265/00; C07D265/04; C07D265/06; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/40; C07D211/44; C07D211/52
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
85 words
A compound of the formula ##SPC18## wherein R 3 signifies fluorine, chlorine or lower alkoxy; X signifies an oxygen atom or a sulfur atom; R 10 signifies hydrogen, lower alkyl, lower alkanoyl, C 3 to C 6 cycloalkyl or C 3 to C 6 cycloalkyl-lower alkyl; R 20 signifies hydrogen, lower alkyl, C 3 to C 6 cycloalkyl or C 3 to C 6 cycloalkyl-lower alkyl; or R 10 and R 20 each represent an oxygen atom and together with the nitrogen atom represent nitro.
Claim 2
Dependent Claim
85 words
A compound of the formula ##SPC18## wherein R 3 signifies fluorine, chlorine or lower alkoxy; X signifies an oxygen atom or a sulfur atom; R 10 signifies hydrogen, lower alkyl, lower alkanoyl, C 3 to C 6 cycloalkyl or C 3 to C 6 cycloalkyl-lower alkyl; R 20 signifies hydrogen, lower alkyl, C 3 to C 6 cycloalkyl or C 3 to C 6 cycloalkyl-lower alkyl; or R 10 and R 20 each represent an oxygen atom and together with the nitrogen atom represent nitro.
References Cited (Backward Citations)
US3706755A
Cited
US3674799A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-04-20 | 1979-10-20 | 1980-04-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-04-20 | 1983-10-20 | 1984-04-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-04-20 | 1987-10-20 | 1988-04-20 | $7700.00 | Window Closed / Lapsed |