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US4005108A
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Novel anti-leukemic diterpenoid triepoxides
Assignee: Research Corp
•
Filing: 1973-04-03
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Granted: 1977-01-25
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Expires: 1993-04-03
Abstract
Abstract There are provided novel diterpenoid triepoxides, derived from Tripterygium wilfordii Hook F. which possess high and surprising antileukemic activity at dosage levels of micrograms/kilogram body weight.
Inventors
- 👤 S. Morris Kupchan
- 👤 William A. Court
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:02
CPC Classifications
C; C07; C07D; C07D493/00; C07D493/22
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
15 words
A compound selected from the group having the formula: ##STR3## R is hydrogen or hydroxy.
Claim 2
Dependent Claim
15 words
A compound selected from the group having the formula: ##STR3## R is hydrogen or hydroxy.
Claim 3
Dependent Claim
9 words
A compound of claim 1 wherein R is hydrogen.
Claim 4
Dependent Claim
9 words
A compound of claim 1 wherein R is hydroxy.
Claim 5
Dependent Claim
1 words
##STR4##
Claim 6
Dependent Claim
1 words
##STR4##
References Cited (Backward Citations)
US3556709A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-01-25 | 1980-07-26 | 1981-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-01-25 | 1984-07-26 | 1985-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-01-25 | 1988-07-26 | 1989-01-25 | $7700.00 | Window Closed / Lapsed |