Patent US4206121A successfully refreshed from Google Patents.
US4206121A
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Substituted acyl derivatives of amino acids
Assignee: ER Squibb and Sons LLC
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Filing: 1978-12-04
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Granted: 1980-06-03
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Expires: 1998-12-04
Abstract
Abstract New substituted acyl derivatives of amino acids which have the general formula ##STR1## are useful as angiotensin converting enzyme inhibitors.
Inventors
- 👤 Miguel A. Ondetti
- 👤 Frank L. Weisenborn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 13:21
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/54; C07D233/64; C07C; C07C323/00; C07C327/00; C07D207/00; C07D207/02; C07D207/04; C07D207/10; C07D207/16; C07D209/00; C07D209/02; C07D209/04; C07D209/10; C07D209/18; C07D209/20; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
26 words
A compound of the formula ##STR19## wherein R 1 is hydroxy or lower alkoxy; A is hydrogen, lower alkyl, or hydroxy-lower alkylene; and B is ##STR20##
Claim 2
Dependent Claim
26 words
A compound of the formula ##STR19## wherein R 1 is hydroxy or lower alkoxy; A is hydrogen, lower alkyl, or hydroxy-lower alkylene; and B is ##STR20##
Claim 3
Dependent Claim
10 words
A compound as in claim 1 wherein B is 3-indolylmethyl.
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) | 1983-06-03 | 1983-12-03 | 1984-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-03 | 1987-12-03 | 1988-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-03 | 1991-12-03 | 1992-06-03 | $7700.00 | Window Closed / Lapsed |