US4122082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
4-Desacetoxy-4-oxovinblastine
Assignee: Eli Lilly and Co
•
Filing: 1977-11-07
•
Granted: 1978-10-24
•
Expires: 1997-11-07
Abstract
Abstract 4-Desacetoxy-4-oxovinblastine, prepared by oxidation of 4-desacetylvinblastine, useful as an intermediate.
Inventors
- 👤 Ian G. Wright
- 👤 Norbert Neuss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 04:39
CPC Classifications
C; C07; C07D; C07D519/00; C07D519/04
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
66 words
An alkaloidal base of the formula ##STR5## wherein R 2 is CH 3 or CHO and when taken singly, R 5 is H and one of R 3 and R 4 is OH or H and the other C 2 H 5 and when R 4 and R 5 are taken together, they form an α-epoxide ring and R 3 is C 2 H 5 .
Claim 2
Dependent Claim
66 words
An alkaloidal base of the formula ##STR5## wherein R 2 is CH 3 or CHO and when taken singly, R 5 is H and one of R 3 and R 4 is OH or H and the other C 2 H 5 and when R 4 and R 5 are taken together, they form an α-epoxide ring and R 3 is C 2 H 5 .
Claim 3
Dependent Claim
35 words
A compound according to claim 1, in which R 2 is CH 3 , R 5 is H, R 3 is OH and R 4 is C 2 H 5 , said compound being 4-desacetoxy-4-oxovinblastine.
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) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |