US3790581A
Expired / Lapsed
US
⏱️ 0.0 years remaining
N-(1-(3-cyano-3,3-bis(optionally substituted phenyl)propyl)-4-phenylpiperidine-4-carbonyloxy)succinimides
Assignee: GD Searle LLC
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Filing: 1972-08-17
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Granted: 1974-02-05
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Expires: 1992-08-17
Abstract
Abstract PREPARATION OF THE SUBJECT COMPOUNDS BY REACTION OF 1-(3-CYANO-3,3-BIS(OPTIONALLY SUBSTITUTED PHENYL) PROPYL)4-PHENYLPIPERIDINE-4-CATBOXYLIC ACID WITH AN N-HYDROXY HO-N<(-Q-) WHEREIN -N<(-Q-) REPRESENTS AN OPTIONALLY SUBSTITUTED MONOCYCLIC OR FUSED POLYCYCLIC-HETEROCYCLIC RADICAL CONTAINING AT LEAST ONE CARBONYL FUNCTION ADJACENT TO THE NITROGEN ATOM, IN THE PRESENCE OF A SUITABLE DEHYDRATING AGENT, AND THEIR UNEXPECTED UTILITY AS NARCOTIC ANTAGONISTS ARE DISCLOSED.
Inventors
- 👤 E Kreider
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:02
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/36; C07D211/60; C07D211/62; C07D211/64
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) | 1977-02-04 | 1977-08-06 | 1978-02-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-04 | 1981-08-06 | 1982-02-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-04 | 1985-08-06 | 1986-02-05 | $7700.00 | Window Closed / Lapsed |