US4530930A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Antimicrobial 1-ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid derivatives
Assignee: Kanebo Ltd
•
Filing: 1983-12-19
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Granted: 1985-07-23
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Expires: 2003-12-19
Abstract
Abstract 1-Ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid derivative of the formula: ##STR1## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, which have excellent anti-microbial activities and are useful as an anti-microbial agent for the treatment of infectious diseases in warm-blooded animals including human beings, and an anti-microbial composition containing said compound as an active ingredient.
Inventors
- 👤 Toshio Uno
- 👤 Masanori Takamatsu
- 👤 Koji Iuchi
- 👤 Goro Tsukamoto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 06:58
CPC Classifications
C; C07; C07D; C07D231/00; C07D231/02; C07D231/10; C07D231/12; A; A61; A61P; A61P31/00; A61P31/04; C07D233/00; C07D233/54; C07D233/56; C07D249/00; C07D249/02; C07D249/08
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
23 words
A 1-ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid compound of the formula: ##STR7## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
Claim 2
Dependent Claim
23 words
A 1-ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid compound of the formula: ##STR7## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms.
Claim 3
Dependent Claim
11 words
The compound according to claim 1, wherein R is hydrogen atom.
Claim 4
Dependent Claim
11 words
The compound according to claim 1, wherein R is methyl group.
Claim 5
Dependent Claim
41 words
An anti-microbial composition, which comprises as an active ingredient a 1-ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid compound of the formula: ##STR8## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, in admixture with a pharmaceutically acceptable carrier or diluent.
Claim 6
Dependent Claim
41 words
An anti-microbial composition, which comprises as an active ingredient a 1-ethyl-6,8-difluoro-1,4-dihydro-7-(1-imidazolyl)-4-oxoquinoline-3-carboxylic acid compound of the formula: ##STR8## wherein R is hydrogen atom or an alkyl group having 1 to 3 carbon atoms, in admixture with a pharmaceutically acceptable carrier or diluent.
Claim 7
Dependent Claim
11 words
The composition according to claim 4, wherein R is hydrogen atom.
Claim 8
Dependent Claim
11 words
The composition according to claim 4, wherein R is methyl group.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-22 | 1989-01-21 | 1989-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-22 | 1993-01-21 | 1993-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-22 | 1997-01-21 | 1997-07-23 | $7700.00 | Window Closed / Lapsed |