US3819628A
Expired / Lapsed
US
⏱️ 0.0 years remaining
2-phenyl-4-substituted amino-quinazolines and nitrates thereof
Assignee: Sandoz AG
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Filing: 1972-07-31
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Granted: 1974-06-25
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Expires: 1992-07-31
Abstract
Abstract QUINAZOLINES SUBSTITUTED AT THE 2- POSITION BY A PHENYL GROUP AND AT THE 4-POSITION BY AN AMINO FUNCTION BEARING A HYDROXY-LKYL NITRATE MOIETY, E.G., 4-(5-HYDROXYPENTYL)AMINO-2-PHENYL-6,7-DIMETHOXY-QUINAZOLINE NITRATE. THE COMPOUNDS HAVE PHARMACOLOGICAL ACTIVITY IN ANIMALS AND ARE USEFUL, FOR EXAMPLE, AS ANTI-ANGINAL AGENTS AND IN THE TREATMENT OF ARRHYTHMIA. ALSO DISCLOSED ARE THE CORRESPONDING HYDROXY INTERMEDIATES WHICH ARE USEFUL IN PREPARATION OF THE NITRATES AND ALSO AS ANTI-ANGINAL AGENTS OR AS AGENTS IN THE TREATMENT OF ARRYTHMIA.
Inventors
- 👤 W Simpson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:10
CPC Classifications
C; C07; C07D; C07D403/00; C07D403/02; C07D403/04; C07D239/00; C07D239/70; C07D239/72; C07D239/86; C07D239/94
Claims Analysis
Total Claims: 0
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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) | 1977-06-24 | 1977-12-24 | 1978-06-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-24 | 1981-12-24 | 1982-06-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-24 | 1985-12-24 | 1986-06-25 | $7700.00 | Window Closed / Lapsed |