US4711958A
Expired / Lapsed
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Morpholine containing amino acid derivatives
Assignee: Kissei Pharmaceutical Co Ltd
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Filing: 1987-04-01
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Granted: 1987-12-08
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Expires: 2007-04-01
Abstract
Abstract Amino acid derivatives represented by formula <IMAGE> wherein His represents an L-histidyl group, X represents a straight or branched alkoxy group having 1 to 7 carbon atoms, a straight or branched alkylamino group having 1 to 7 carbon atoms, a cycloalkyloxy group having 3 to 7 carbon atoms, a morpholino group, said alkoxy group having one or more halogen atoms as substituents; or a pharmaceutically acceptable salt, are useful in the treatment of hypertension.
Inventors
- 👤 Kinji Iizuka
- 👤 Tetsuhide Kamijo
- 👤 Tetsuhiro Kubota
- 👤 Kenji Akahane
- 👤 Hideaki Umeyama
- 👤 Yoshiaki Kiso
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 21:05
CPC Classifications
C; C07; C07K; C07K5/00; C07K5/04; C07K5/08; C07D; C07D233/00; C07D233/54; C07D233/64; Y; Y10; Y10S; Y10S530/00; Y10S530/86
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
68 words
Amino acid derivatives represented by formula (I): ##STR10## wherein His represents an L-histidyl group, X represents a straight or branched alkoxy group having 1 to 7 carbon atoms, a straight or branched alkylamino group having 1 to 7 carbon atoms, a cycloalkyloxy group having 3 to 7 carbon atoms, a morpholino group, said alkoxy group having one or more halogen atoms as substituents; or a pharmaceutically acceptable salt.
Claim 2
Dependent Claim
68 words
Amino acid derivatives represented by formula (I): ##STR10## wherein His represents an L-histidyl group, X represents a straight or branched alkoxy group having 1 to 7 carbon atoms, a straight or branched alkylamino group having 1 to 7 carbon atoms, a cycloalkyloxy group having 3 to 7 carbon atoms, a morpholino group, said alkoxy group having one or more halogen atoms as substituents; or a pharmaceutically acceptable salt.
Claim 3
Dependent Claim
34 words
Amino acid derivatives as claimed in claim 1, represented by formula: ##STR11## wherein (S) represents S-configuration, His and X have the same meanings as defined in claim 1 or a pharmaceutically acceptable salt thereof.
Claim 4
Dependent Claim
32 words
The amino acid derivative as claimed in claim 2, represented by formula: ##STR12## wherein His and (S) have the same meanings as defined in claim 1, or a pharmaceutically acceptable salt thereof.
References Cited (Backward Citations)
US4656269A
Cited
US4656269B1
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1990-12-07 | 1991-06-08 | 1991-12-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-07 | 1995-06-08 | 1995-12-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-07 | 1999-06-08 | 1999-12-08 | $7700.00 | Window Closed / Lapsed |