US3629245A
Expired / Lapsed
US
⏱️ 0.0 years remaining
16 17-isoxazolino-delta-1 3 5(10)-gonatrienes
Assignee: Sanofi Aventis France
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Filing: 1969-07-07
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Granted: 1971-12-21
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Expires: 1989-07-07
Abstract
Abstract 16A,17A-ISOXAZOLINE STEROIDS OF THE FORMULA 2-R2,3-(R1-O-),13-Z,16,17-(-CH=N-O-),17-(R-O-) GONA-1,3,5(10)-TRIENE WHEREIN R AND R1 ARE SELECTED FROM THE GROUP CONSISTING OF HYDROGEN, ALKYL OF 1 TO 7 CARBON ATOMS AND ACYL OF AN ORGANIC CARBOXYLIC ACIDS OF 1 TO 18 CARBON ATOMS, R2 IS SELECTED FROM THE GROUP CONSISTING OF HYDROGEN AND HALOGEN AND Z IS ALKYL OF 1 TO 4 CARBON ATOMS AND THEIR PREPARATION AND NOVEL INTERMEDIATES. THE INVENTION ALSO INCLUDES HYPOCHOLESTEROLEMIC COMPOSITIONS HAVING NO SUBSTANTIAL ESTROGENIC ACTIVITY.
Inventors
- 👤 Daniel Bertin
- 👤 Lucien Nedelec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:16
CPC Classifications
C; C07; C07J; C07J71/00; C07J75/00
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) | 1974-12-20 | 1975-06-21 | 1975-12-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-20 | 1979-06-21 | 1979-12-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-20 | 1983-06-21 | 1983-12-21 | $7700.00 | Window Closed / Lapsed |