US4526979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Carbamates and oxalamides of amino-N-(1H-tetrazol-5-yl)benzamides
Assignee: Aventis Pharmaceuticals Inc
•
Filing: 1983-07-22
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Granted: 1985-07-02
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Expires: 2003-07-22
Abstract
Abstract Alkoxycarbonyl and oxalyl derivatives of amino-N-(1H-tetrazol-5-yl)benzamides are described herein. The compounds involved are useful as antiallergic agents. These compounds can be prepared by the reaction of an amino-N-(1H-tetrazol-5-yl)benzamide with an appropriate acid chloride.
Inventors
- 👤 Norton P. Peet
- 👤 Shyam Sunder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:20
CPC Classifications
C; C07; C07D; C07D257/00; C07D257/02; C07D257/04; C07D257/06; A; A61; A61P; A61P37/00; A61P37/08
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
31 words
A compound of the formula: ##STR4## wherein n is 1 or 2; X is hydrogen or chlorine; and R is alkyl of 1-6 carbon atoms; and the pharmaceutically acceptable salts thereof.
Claim 2
Dependent Claim
31 words
A compound of the formula: ##STR4## wherein n is 1 or 2; X is hydrogen or chlorine; and R is alkyl of 1-6 carbon atoms; and the pharmaceutically acceptable salts thereof.
Claim 3
Dependent Claim
31 words
A compound according to claim 1 which has the formula: ##STR5## wherein X is hydrogen or chlorine; and R is alkyl of 1-6 carbon atoms; and the pharmaceutically acceptable salts thereof.
Claim 4
Dependent Claim
25 words
A compound according to claim 1 which has the formula: ##STR6## when R is alkyl of 1-6 carbon atoms; and the pharmaceutically acceptable salts thereof.
Claim 5
Dependent Claim
11 words
A compound according to claim 1 which is 2-oxo-N-[2-((1H-tetrazol-5-yl)aminocarbonyl)phenyl]glycine ethyl ester.
Claim 6
Dependent Claim
11 words
A compound according to claim 1 which is 2-oxo-N-[3-((1H-tetrazol-5-yl)aminocarbonyl)phenyl]glycine ethyl ester.
Claim 7
Dependent Claim
11 words
A compound according to claim 1 which is 2-oxo-N-[4-((1H-tetrazol-5-yl)aminocarbonyl)phenyl]glycine ethyl ester.
Claim 8
Dependent Claim
25 words
A compound according to claim 1 which has the formula: ##STR7## wherein R is alkyl of 1-6 carbon atoms; and the pharmaceutically acceptable salts thereof.
Claim 9
Dependent Claim
13 words
A compound according to claim 1 which is [2-((1 H-tetrazol-5-yl)aminocarbonyl)phenyl]carbamic acid ethyl ester.
Claim 10
Dependent Claim
12 words
A compound according to claim 1 which is [3-((1H-tetrazol-5-yl)aminocarbonyl)phenyl]carbamic acid ethyl ester.
References Cited (Backward Citations)
US3824249A
Cited
US4176631A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-07-01 | 1988-12-31 | 1989-07-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-01 | 1992-12-31 | 1993-07-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-01 | 1996-12-31 | 1997-07-02 | $7700.00 | Window Closed / Lapsed |