Patent US3775414A successfully refreshed from Google Patents.
US3775414A
Expired / Lapsed
US
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Process for the preparation of 14-hydroxymorphinan derivatives
Assignee: Bristol Myers Co
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Filing: 1972-05-10
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Granted: 1973-11-27
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Expires: 1992-05-10
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. A NEW AND MORE EFFICIENT TOTAL SYNTHESIS FOR THE PREPARATION OF THESE COMPOUNDS IS DESCRIBED HEREIN VIA 3-METHOXY-9-BROMONORHASUBANAN HYDROBROMIDE HAVING THE FORMULA 6-(CH3-O-),10-BR-1,2,3,9,10,10A-HEXAHYDRO-4H-10,4A- IMINOETHANOPHENANTHRENE H-BR
Inventors
- 👤 I Monkovic
- 👤 T Conway
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:14
CPC Classifications
C; C07; C07D; C07D209/00; C07D209/56; C07D209/58; A; A61; A61P; A61P25/00; A61P25/04; C07C; C07C49/00; C07C49/587; C07C49/753; C07C49/755; 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) | 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 |