US3663617A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1-(adamantylmethyloxy) - 2 - hydroxy-3-substituted amino propanes and acid addition salts thereof
Assignee: RECH ET D APPLIC SCIENT ET MED
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Filing: 1970-06-04
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Granted: 1972-05-16
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Expires: 1990-06-04
Abstract
Abstract ASAMANTANE DERIVATIVES HAVING THE FOLLOWING GENERAL FORMULA: 1-(R1-N(-R2)-CH2-CH(-OH)-CH2-O-CH2-)-ADAMANTANE AND THEIR PHARMACEUTICALLY ACCEPTABLE ACID ADDITION SALTS ARE USEFUL AS SYMPATICLOYTIC, MYOLITIC, ANALGESIC AND, PARTICULARLY, AS LOCAL ANESTHETIC AND B-ADRENERGIC BLOCKING AGENTS. THE NOVEL COMPOUNDS ARE PREPARED STARTING FROM 1-HYDROXY-METHYL-ADAMANTANE THROUGH THE NEW INTERMEDIATE 1-(ADAMANTYL-METHYLOXY) -2,3- EPOXYPROPANE.
Inventors
- 👤 Andrea Pedrazzoli
- 👤 Leone Dall Asta
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:51
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/08; C07D295/084; C07D295/088; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22
Claims Analysis
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-16 | 1975-11-15 | 1976-05-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-16 | 1979-11-15 | 1980-05-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-16 | 1983-11-15 | 1984-05-16 | $7700.00 | Window Closed / Lapsed |