US5352806A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Taxol derivatives
Assignee: Abbott Laboratories
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Filing: 1993-04-14
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Granted: 1994-10-04
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Expires: 2013-04-14
Abstract
Abstract Compounds having the formula ##STR1## wherein --OR 1 comprises the C-13 side-chain of taxol and R 3 comprises hydrogen, as well as a method for the preparation thereof.
Inventors
- 👤 Geewananda P. Gunawardana
- 👤 Larry L. Klein
- 👤 James B. McAlpine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 04:55
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/02; C07D493/06; A; A61; A61P; A61P3/00; A61P3/06; A61P35/00; C07D305/00; C07D305/14
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
14 words
A compound selected from the group consisting of (a) 9-dihydro-13-acetylbaccatin III and (b) 9-dihydrotaxol.
Claim 2
Dependent Claim
14 words
A compound selected from the group consisting of (a) 9-dihydro-13-acetylbaccatin III and (b) 9-dihydrotaxol.
References Cited (Backward Citations)
US4876399A
Cited
US5015744A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1997-10-03 | 1998-04-04 | 1998-10-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-10-03 | 2002-04-04 | 2002-10-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-10-03 | 2006-04-04 | 2006-10-04 | $7700.00 | Window Closed / Lapsed |