Patent US3751390A successfully refreshed from Google Patents.
US3751390A
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Substituted dibenzofuran
Assignee: Aldrich Chemical Co Inc
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Filing: 1971-05-19
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Granted: 1973-08-07
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Expires: 1991-05-19
Abstract
Abstract COMPOUNDS OF THE FORMULA 2-(B-N-Y-CH(-OH)-)DIBENZOFURAN WHICH POSSESS HYPOTENSIVE ACTIVITY AND ARE USEFUL FOR TREATING HYPERTENSION IN MAMMALS AND COMPOUNDS OF THE FORMULA 2-(B-N-Y-CO-)DIBENZOFURAN WHICH ARE USEFUL AS INTERMEDIATES IN THE PREPARATION OF THE FOREGOING HYPOTENSIVE AGENTS AND ALSO IN SOME CASES EXHIBIT HYPOTENSIVE, SEDATIVE AND MUSCLE RELAXANT ACTIVITY AND PROCESSES FOR THE PREPARATION OF THE FOREGOING COMPOUNDS. IN THE FOREGOING FORMULAE, NB IS A PRIMARY OR SECONDARY AMINO RADICAL AND Y IS (LOWER) AKYLENE.
Inventors
- 👤 H Hopps
- 👤 D Jackman
- 👤 J Biel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:32
CPC Classifications
C; C07; C07D; C07D307/00; C07D307/77; C07D307/91
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |