Patent US2866784A successfully refreshed from Google Patents.
US2866784A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for obtaining voacanga alkaloids
Assignee: Sorelux SA
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Filing: 1956-04-17
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Granted: 1958-12-30
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Expires: 1976-04-17
Abstract
No abstract record available.
Inventors
- 👤 Gillo Leon
- 👤 Maiuil Jean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 17:31
CPC Classifications
C; C07; C07D; C07D519/00; C07D519/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
162 words
PROCESS FOR THE PREPARATION OF ALKALOIDS PERTAINING TO THE GROUP OF VOACANGINE CORRESPONDING TO THE FORMULAR C22H28O3N2, VOCAMINE CORRESPONDING TO THE FORMULA C44H52O5N4 AND VOBTUSINE CORRESPONDING TO THE FORMULA C20H26O3N2 FROM FINELY GROUND PARTS OF A PLANT OF THE GENUS VOACANGA COMPRISES SUBJECTING SAID PARTS TO THE ACTION OF A FIRST ORGANIC SOLVENT OF THE GROUP CONSISTING OF DIETHYL ETHER, ISOPROPYL ETHER, BENZENE, TOLUENE, DICHLOROETHANE, CHLOROFORM, METHYLENE CHLORIDE, DICHLOROETHYLENE, METHYL ACETATE AND ETHYL ACETATE, CONCENTRATING THE LIQUOR THUS OBTAINED, SUBJECTING THE CONCENTRATE TO THE ACTION OF A FURTHER ORGANIC SOLVENT OF THE GROUP CONSITING OF METHANOL AND ETHANOL HAVING A STRONG ACID ADDED THERETO, THEN SEPARATING BY CHROMATOGRAPHY SAID ALKALOIDS FROM THE EXTRACT THUS OBTAINED, THE CHROMATOGRAPHIC ADSORPTION AGENT BEING SELECTED FROM THE GROUP CONSISTING OF ALUMINA, SILICA, STARCH, TALC, SODIUM CARBONATE, CALCIUM CARBONATE, CALCIUM PHOSPHATE AND ACTIVE CARBON AND THE ELUTION AGENT BEING SELECTED FROM THE GROUP CONSISTING OF BENZENE, BENZENE-ACETONE MIXTURES, BENZENE-ETHYL ACETATE MIXTURES, BENZENE-DI-ISOPROPYL ETHER MIXTURES AND BENZEN-METHANOL MIXTURES.
Claim 2
Dependent Claim
162 words
PROCESS FOR THE PREPARATION OF ALKALOIDS PERTAINING TO THE GROUP OF VOACANGINE CORRESPONDING TO THE FORMULAR C22H28O3N2, VOCAMINE CORRESPONDING TO THE FORMULA C44H52O5N4 AND VOBTUSINE CORRESPONDING TO THE FORMULA C20H26O3N2 FROM FINELY GROUND PARTS OF A PLANT OF THE GENUS VOACANGA COMPRISES SUBJECTING SAID PARTS TO THE ACTION OF A FIRST ORGANIC SOLVENT OF THE GROUP CONSISTING OF DIETHYL ETHER, ISOPROPYL ETHER, BENZENE, TOLUENE, DICHLOROETHANE, CHLOROFORM, METHYLENE CHLORIDE, DICHLOROETHYLENE, METHYL ACETATE AND ETHYL ACETATE, CONCENTRATING THE LIQUOR THUS OBTAINED, SUBJECTING THE CONCENTRATE TO THE ACTION OF A FURTHER ORGANIC SOLVENT OF THE GROUP CONSITING OF METHANOL AND ETHANOL HAVING A STRONG ACID ADDED THERETO, THEN SEPARATING BY CHROMATOGRAPHY SAID ALKALOIDS FROM THE EXTRACT THUS OBTAINED, THE CHROMATOGRAPHIC ADSORPTION AGENT BEING SELECTED FROM THE GROUP CONSISTING OF ALUMINA, SILICA, STARCH, TALC, SODIUM CARBONATE, CALCIUM CARBONATE, CALCIUM PHOSPHATE AND ACTIVE CARBON AND THE ELUTION AGENT BEING SELECTED FROM THE GROUP CONSISTING OF BENZENE, BENZENE-ACETONE MIXTURES, BENZENE-ETHYL ACETATE MIXTURES, BENZENE-DI-ISOPROPYL ETHER MIXTURES AND BENZEN-METHANOL MIXTURES.
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) | 1961-12-29 | 1962-06-30 | 1962-12-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-12-29 | 1966-06-30 | 1966-12-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-12-29 | 1970-06-30 | 1970-12-30 | $7700.00 | Window Closed / Lapsed |