US4380644A
Expired / Lapsed
US
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2-Oxoimidazolidine derivatives
Assignee: Tanabe Pharma Corp
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Filing: 1981-08-07
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Granted: 1983-04-19
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Expires: 2001-08-07
Abstract
Abstract A 2-oxoimidazolidine derivative of the formula: <IMAGE> (I) wherein R1 is lower alkyl or phenyl-lower alkyl and R2 is lower alkyl or phenyl, and a process for preparation thereof are disclosed. Said 2-oxoimidazolidine derivative (I) or a pharmaceutically acceptable salt thereof is useful as a hypotensive agent.
Inventors
- 👤 Naoto Yoneda
- 👤 Jyoji Kato
- 👤 Keizo Kinashi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 12:13
CPC Classifications
C; C07; C07D; C07D233/00; C07D233/04; C07D233/28; C07D233/30; C07D233/32; C07D233/38; A; A61; A61P; A61P9/00; A61P9/12; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/55
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
26 words
A 2-oxoimidazolidine derivative of the formula: ##STR10## wherein R 1 is methyl, ethyl or benzyl and R 2 is phenyl, or a pharmaceutically acceptable salt thereof.
Claim 2
Dependent Claim
26 words
A 2-oxoimidazolidine derivative of the formula: ##STR10## wherein R 1 is methyl, ethyl or benzyl and R 2 is phenyl, or a pharmaceutically acceptable salt thereof.
Claim 3
Dependent Claim
26 words
A (4S)-1-substituted-3-[(2S)-4-acylthio-2-methylpropionyl]-2-oxo-imidazolidine-4-carboxylic acid of the formula: ##STR11## wherein R 1 is methyl, ethyl or benzyl and R 2 is phenyl, or a pharmaceutically acceptable salt thereof.
Claim 4
Dependent Claim
26 words
A (4S)-1-substituted-3-[(2S)-4-acylthio-2-methylpropionyl]-2-oxo-imidazolidine-4-carboxylic acid of the formula: ##STR11## wherein R 1 is methyl, ethyl or benzyl and R 2 is phenyl, or a pharmaceutically acceptable salt thereof.
References Cited (Backward Citations)
US3225033A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |