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US3635986A
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2-substituted amino-hexahydrobenzo(a)quinolizines
Assignee: Bayer Corp
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Filing: 1969-12-22
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Granted: 1972-01-18
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Expires: 1989-12-22
Abstract
Abstract 2-SUBSTITUTED AMINO-HEXAHYDROBENZO(A)QUINOLIZINES AND PHARMACOLOGICALLY ACEPTABEL SALTS THEREOF THAT ARE USEFUL AS ANTI-HYPERTENSIVE AGENTS. PREPARED BY REACTING 2-OXO1,3,4,6,7,11B-HEXAHYDRO -2H -BENZO(A) QUINOLIZINE WITH AN AMINO TO FORM A SCHIFF BASE WHICH IS THEN REDUCED.
Inventors
- 👤 John William Van Dyke Jr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 05:34
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/02; C07D471/04; C07D455/00; C07D455/03; C07D455/04; C07D455/06; A; A61; A61K; A61K31/00; A61K31/33; A61K31/395; A61K31/435; A61K31/47; A61K31/4738; A61K31/4745
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) | 1975-01-17 | 1975-07-19 | 1976-01-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-17 | 1979-07-19 | 1980-01-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-17 | 1983-07-19 | 1984-01-18 | $7700.00 | Window Closed / Lapsed |