US3696091A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel cardiac-active principles of the cardenolide glycoside class
Assignee: C.H. Boehringer Sohn AG and Co KG
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Filing: 1970-06-03
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Granted: 1972-10-03
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Expires: 1990-06-03
Abstract
Abstract CARDENOLIDE GLYCOSIDES OF THE FORMULA 3-A,12-R'',14-(HO-),17-(4-X,5-(O=)-2,5-DIHYDROFURAN-3-YL) GONANE WHEREIN R1 IS HYDROGEN, HYDROXYL OR ACYLOXY, X IS CHLORINE, FLUORINE, ALKYL OF 1 TO 4 CARBON ATOMS OR ALKOXY OF 1 TO 4 CARBON ATOMS, AND A IS DIGITOXOSYL OF THE FORMULA R2-O-((2-(CH3-),4-(R2-O-)TETRAHYDROPYRAN-3,6-YLENE)-O)3- WHERE R2 IS HYDROGEN OR ACYL; THE COMPOUNDS ARE USEFUL AS CARDIAC-ACTIVE PRINCIPLES HAVING A POSITIVE INTOTROPIC ACTIVITY IN WARM-BLOODED ANIMALS.
Inventors
- 👤 Wolfgang Eberlein
- 👤 Josef Nickl
- 👤 Joachim Heider
- 👤 Gerhard Dahms
- 👤 Walter Kobinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 16:28
CPC Classifications
C; C07; C07J; C07J19/00
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) | 1975-10-03 | 1976-04-03 | 1976-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-03 | 1980-04-03 | 1980-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-03 | 1984-04-03 | 1984-10-03 | $7700.00 | Window Closed / Lapsed |