Patent US3819635A successfully refreshed from Google Patents.
US3819635A
Expired / Lapsed
US
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14-hydroxymorphinan derivatives
Assignee: Bristol Myers Co
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Filing: 1972-01-13
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Granted: 1974-06-25
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Expires: 1992-01-13
Abstract
Abstract N - SUBSTITUTED - 14 - HYDROXY-3-SUBSTITUTED-MORPHINAN DERIVATIVES HAVE BEEN FOUND TO POSSESS POTENT NARCOTIC AGONIST OR ANTAGONIST ACTIVITY. IN PARTICULAR, THE COMPOUND 3,14 - DIHYDROXY-N-CYCLOPROPYLMETHYLMORPHINAN HAS BEEN FOUND TO POSSESS POTENT NARCOTIC ANTAGONIST ACTIVITY. THESE COMPOUNDS ARE PREPARED BY TOTAL SYNTHESIS AND ARE NOT DERIVED FROM OPIUM ALKALOIDS.
Inventors
- 👤 I Pachter
- 👤 B Belleau
- 👤 I Monkovic
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 20:18
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/36; A; A61; A61P; A61P25/00; A61P25/04; C07C; C07C271/00; C07C271/06; C07C271/08; C07C271/10; C07C271/16; C07C49/00; C07C49/587; C07C49/753; C07D221/00; C07D221/02; C07D221/22; C07D221/28; C07C2603/00; C07C2603/02; C07C2603/04; C07C2603/22; C07C2603/26
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) | 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 |