US4745196A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Orally active phosphonyl hydroxyacyl prolines
Assignee: ER Squibb and Sons LLC
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Filing: 1986-01-06
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Granted: 1988-05-17
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Expires: 2006-01-06
Abstract
Abstract This invention is directed to orally active antihypertensive agents of the formula <IMAGE> wherein R1 is certain alkyl or aralkyl groups.
Inventors
- 👤 Donald S. Karanewsky
- 👤 Edward W. Petrillo, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 02:29
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/547; C07F9/553; C07F9/572; A; A61; A61P; A61P43/00; A61P9/00; A61P9/12
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
12 words
A compound of the formula ##STR25## or a pharmaceutically acceptable salt thereof.
Claim 2
Dependent Claim
12 words
A compound of the formula ##STR25## or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
8 words
The compound of claim 1, (S)-1-[6-amino-2-[[hydroxy(4-phenylbutyl)phosphinyl]oxy]-1-oxohexyl]-L-proline, dilithium salt.
Claim 4
Dependent Claim
6 words
The compound of claim 1, (S)-1-[6-amino-2-[[hydroxy(4-phenylbutyl)phosphinyl]oxy]-1-oxohexyl]-L-proline.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1991-05-17 | 1991-11-16 | 1992-05-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-05-17 | 1995-11-16 | 1996-05-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-05-17 | 1999-11-16 | 2000-05-17 | $7700.00 | Window Closed / Lapsed |