US3969463A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-methylene malonate of tetrahydroquinoline and derivatives thereof
Assignee: Riker Laboratories Inc
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Filing: 1975-01-22
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Granted: 1976-07-13
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Expires: 1995-01-22
Abstract
Abstract Certain substituted 6,7-dihydro-1-oxo-1H,5H-benzo[ij]-quinolizine-2-carboxylic acids and hydrazides, esters, amides and salts thereof, intermediates therefor, and a process for their preparation are described; the compounds are active as anti-microbial agents.
Inventors
- 👤 John F. Gerster
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 13:53
CPC Classifications
C; C07; C07D; C07D455/00; C07D455/03; C07D455/04; A; A01; A01N; A01N43/00; A01N43/90; C07D471/00; C07D471/02; C07D471/06
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
106 words
Compounds of the formula ##SPC5## wherein alk is alkyl having 1 to 4 carbon atoms, Y is alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, hydroxy, nitro, cyano, trifluoromethyl, amino, acetamido, trifluoroacetamido or N,N-lower dialkylamino having 2 to 8 carbon atoms, R is methyl, ethyl or trifluoromethyl, n is zero, one or two, and Y may also be methylenedioxy or ethylenedioxy bonded to adjacent ring positions, m is zero, one or two, and when R is trifluoromethyl, m is one; provided however that Y is located and comprised such that said compounds are capable of forming substituted benzo[ij]quinolizine products.
Claim 2
Dependent Claim
106 words
Compounds of the formula ##SPC5## wherein alk is alkyl having 1 to 4 carbon atoms, Y is alkyl having 1 to 4 carbon atoms, alkoxy having 1 to 4 carbon atoms, halogen, hydroxy, nitro, cyano, trifluoromethyl, amino, acetamido, trifluoroacetamido or N,N-lower dialkylamino having 2 to 8 carbon atoms, R is methyl, ethyl or trifluoromethyl, n is zero, one or two, and Y may also be methylenedioxy or ethylenedioxy bonded to adjacent ring positions, m is zero, one or two, and when R is trifluoromethyl, m is one; provided however that Y is located and comprised such that said compounds are capable of forming substituted benzo[ij]quinolizine products.
Claim 3
Dependent Claim
9 words
Compounds according to claim 1, wherein alk is ethyl.
References Cited (Backward Citations)
US3860598A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-07-13 | 1980-01-12 | 1980-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-07-13 | 1984-01-12 | 1984-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-07-13 | 1988-01-12 | 1988-07-13 | $7700.00 | Window Closed / Lapsed |