US3764602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
3-(4-phenyl-1 2, 6 di keto piperazinyl)-2-hydroxy-propoxy)-aniline
Assignee: F Hoffmann La Roche AG
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Filing: 1972-07-07
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Granted: 1973-10-09
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Expires: 1992-07-07
Abstract
Abstract Substituted (3-(4-phenyl-1-piperazinyl)-propoxy or propylthio)anilines prepared, inter alia, by the reaction of the correspondingly substituted propoxy or propyl-thio anilines and N-phenyl-piperazines, are described. The end products, i.e., the substituted (3-(4-phenyl-1-piperazinyl)-propoxy or propyl-thio) anilines are useful as hypotensive agents. These may be prepared via the corresponding 2,6 piperazine diones.
Inventors
- 👤 A Edenhofer
- 👤 H Spiegelberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:39
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D241/00; C07D241/02; C07D241/06; C07D241/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
29 words
The compound in accordance with claim 1, wherein R1 is o-amino; R2 and R3 are hydrogen; R4 is o-methoxy; X is oxy and Y'' is hydroxymethylene, i.e., o-3-(4-(o-methoxy-phenyl)-1-(2,6-diketo-piperazinyl))-2-hydroxy-propoxy -aniline.
Claim 2
Dependent Claim
27 words
The compound in accordance with claim 1, wherein R1 is o-amino; R2, R3 and R4 are hydrogen; X is oxy and Y'' is hydroxy-methylene, i.e., o-(3-(4-phenyl)-1-(2,6-diketo- 2-hydroxy-propoxy)-aniline.
References Cited (Backward Citations)
US3171837A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-10-08 | 1977-04-09 | 1977-10-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-10-08 | 1981-04-09 | 1981-10-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-10-08 | 1985-04-09 | 1985-10-09 | $7700.00 | Window Closed / Lapsed |