US4077998A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phthaloyl amino acid hydroxamic acids
Assignee: ATK Launch Systems LLC
•
Filing: 1976-08-04
•
Granted: 1978-03-07
•
Expires: 1996-08-04
Abstract
Abstract A series of phthaloyl amino acid hydroxamic acids are useful as inhibitors of Angiotensin I converting enzyme.
Inventors
- 👤 Dyral C. Fessler
- 👤 Edwin R. Micalizzi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-10 01:58
CPC Classifications
C; C07; C07C; C07C233/00; A; A61; A61K; A61K38/00; C07C237/00; C07C237/02; C07C237/22
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
29 words
A compound of the formula: ##STR5## wherein A is methylene, ethylene or ##STR6## wherein R is methyl, isobutyl, benzyl, or 4-aminobutyl and in which ##STR7## is in the D-configuration.
Claim 2
Dependent Claim
29 words
A compound of the formula: ##STR5## wherein A is methylene, ethylene or ##STR6## wherein R is methyl, isobutyl, benzyl, or 4-aminobutyl and in which ##STR7## is in the D-configuration.
Claim 3
Dependent Claim
4 words
The compound 3-(2-carboxybenzamido)propionohydroxamic acid.
Claim 4
Dependent Claim
4 words
The compound 3-(2-carboxybenzamido)propionohydroxamic acid.
Claim 5
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-alanine hydroxamic acid.
Claim 6
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-alanine hydroxamic acid.
Claim 7
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-leucine hydroxamic acid.
Claim 8
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-leucine hydroxamic acid.
Claim 9
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-phenylalanine hydroxamic acid.
Claim 10
Dependent Claim
5 words
The compound N-(2-carboxybenzoyl)-D-phenylalanine hydroxamic acid.
Claim 11
Dependent Claim
4 words
The compound N-(2-carboxybenzoyl)-D-lysinehydroxamic acid.
Claim 12
Dependent Claim
4 words
The compound N-(2-carboxybenzoyl)-D-lysinehydroxamic acid.
Claim 13
Dependent Claim
4 words
The compound 2-carboxybenzamidoacetohydroxamic acid.
Claim 14
Dependent Claim
4 words
The compound 2-carboxybenzamidoacetohydroxamic acid.
References Cited (Backward Citations)
US3268542A
Cited
US3728380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |