US4032528A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,4-substituted-quinolin-2(1h)-ones as cns agents
Assignee: Sandoz Inc
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Filing: 1975-09-18
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Granted: 1977-06-28
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Expires: 1995-09-18
Abstract
Abstract Disclosed are compounds which are 1-alkyl-4-alkoxyquinolin-2(1H)-ones, e.g., 1-methyl-4-butoxyquinolin-2(1H)-one, and which are useful as CNS depressant agents. The compounds may be prepared, for example, by reacting a 1-alkyl-4-hydroxyquinolin-2(1H)-one with an alkyl halide in presence of base.
Inventors
- 👤 Goetz E. Hardtmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:12
CPC Classifications
C; C07; C07D; C07D215/00; C07D215/02; C07D215/16; C07D215/20; C07D215/22
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
16 words
A compound of the formula: ##STR11## wherein R is alkyl of 4 to 6 carbon atoms.
Claim 2
Dependent Claim
16 words
A compound of the formula: ##STR11## wherein R is alkyl of 4 to 6 carbon atoms.
Claim 3
Dependent Claim
18 words
A compound of claim 1 in which R is straight chain alkyl of 4 or 5 carbon atoms.
Claim 4
Dependent Claim
8 words
The compound of claim 2 which is 1-methyl-4-butoxyquinazolin-2(1H)-one.
Claim 5
Dependent Claim
8 words
The compound of claim 2 which is 1-methyl-4-pentoxyquinolin-2(1H)-one.
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) | 1980-06-27 | 1980-12-27 | 1981-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-06-27 | 1984-12-27 | 1985-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-06-27 | 1988-12-27 | 1989-06-28 | $7700.00 | Window Closed / Lapsed |