US3705169A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydroxyphenyl-2-piperidinylcarbinols
Assignee: Smith Kline & French Laboratories Ltd
•
Filing: 1970-11-05
•
Granted: 1972-12-05
•
Expires: 1990-11-05
Abstract
Abstract HYDROXPHENYL-2-PIPERIDINYLCARBINOLS PREPARED BY THE CONDENSATION OF AN APPROPRIATELY SUBSTITUTED ETHER DERIVATIVE OF A HYDROXYBENZALDEHYDE WITH 2-PYRIDYL LITHIUM FOLLOWED BY REMOVAL OF THE ETHER GROUP(S) AND REDUCTION HAVE B-ADRENERGIC STIMULANT ACTIVITY. ERYTHRO AND THREO DIASTEREOISOMERS MAY BE CONVENIENTLY SEPARATED.
Inventors
- 👤 Carl Kaiser
- 👤 Stephen T Ross
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 18:13
CPC Classifications
C; C07; C07D; C07D211/00; C07D211/04; C07D211/06; C07D211/08; C07D211/18; C07D211/20; C07D211/22; C07D213/00; C07D213/02; C07D213/04; C07D213/24; C07D213/44; C07D213/46; C07D213/50
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
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) | 1975-12-05 | 1976-06-05 | 1976-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-12-05 | 1980-06-05 | 1980-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-12-05 | 1984-06-05 | 1984-12-05 | $7700.00 | Window Closed / Lapsed |