US3753995A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process and intermediates in the preparation of eburnamonine
Assignee: Sanofi Aventis France
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Filing: 1971-12-28
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Granted: 1973-08-21
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Expires: 1991-12-28
Abstract
Abstract THE OBJECT OF THIS INVENTION IS A NEW PROCESS OF PREPARATION OF ($) EBURNAMONINE OF THE FORMULA: 12-(O=),13A-(CH3-CH2-)-2,3,4A,5,6,12,13,13A-OCTAHYDRO- 1H-INDOLO(3,2,1-DE)PYRIDO(3,2,1-IJ)(1,5)NAPHTHYRIDINE IT IS KNOWN THAT EBURANAMONINE HAS BEEN ISOLATED FROM SEVERAL PLANT SPECIES SUCH AS VINCA MINOR AND HUNTERIA EBURNEA. EBURNAMONINE POSSESSES INTERESTING PHARMACOLOGICAL PROPERIES, IT PROVOKES A HYPERTENSION ACCOMPANIED BY A RESPIRATORY AND CARDIAC STIMULATION AND AN INCREASE OF TONICITY. IN ADDITION, EBURNAMONINE CAN SERVE AS STARTING MATERIAL IN THE SYNTHESIS OF KNOWN ANALOGOUS COMPOUNDS DISPLAYING AN INTERESTING PHYSIOLOGICAL ACTIVITY.
Inventors
- 👤 J Martel
- 👤 G Costerousse
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:49
CPC Classifications
C; C07; C07D; C07D471/00; C07D471/12; C07D471/14; C07D461/00
Claims Analysis
Total Claims: 0
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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) | 1976-08-20 | 1977-02-19 | 1977-08-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-20 | 1981-02-19 | 1981-08-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-20 | 1985-02-19 | 1985-08-21 | $7700.00 | Window Closed / Lapsed |