US3775477A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N,n'-bis(2-aryl-2-(hydroxy or oxo)-ethyl)-bridged-bis-carboxamides
Assignee: STWB Inc
•
Filing: 1971-03-10
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Granted: 1973-11-27
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Expires: 1991-03-10
Abstract
Abstract CONDENSATION OF AN AMIDE OF THE FORMULA AR-CO-CH2-NH2 AND A DIACID DIHALIDE OF THE FORMULA Z-CO-X-CO-Z PROVIDES N,N'' - BIS(2-ARYL-2-OXOETHYL)-BRIDGED-BISCARBOXAMIDES OF THE FORMULA AR-CO-CH2-NH-CO-X-CO-NH-CH2-CO-AR REDUCTION OF WHICH PROVIDES N,N''-BIS(2-ARYL-2-HYDROXYETHYL)-BRIDGED-BISCARBOXAMIDES OF THE FORMULA (AR-CH(-OH)-CH2-NH-CO)2-X AND N,N''-BRIDGED-BIS(2-ARYL-2-HYDROXYETHYLAMINES) OF THE FORMULA (AR-CH(-OH)-CH2-NH-CH2)2-X THE LATTER COMPOUNDS ARE ALSO PREPARED BY CONDENSATION OF AN EPOXIDE OF THE FORMULA AR-CH<(-O-CH2-) WITH A DIAMINE OF THE FORMULA NI2-CH2-X-CH2-NH2 THE PRODUCTS HAVE ANTIBACTERIAL ACTIVITY IN VITRO AND ARE USEFUL AS ANTIBACTERIAL AGENTS.
Inventors
- 👤 G Diana
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:10
CPC Classifications
C; C07; C07C; C07C233/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |