US4125704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phenyl-substituted rubidazone analogs
Assignee: SRI International Inc
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Filing: 1977-09-14
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Granted: 1978-11-14
•
Expires: 1997-09-14
Abstract
Abstract Rubidazone analogs wherein the phenyl group is substituted by one of 4-phenyl, 4-chloro, 3,4-dichloro or 3-nitro, said compounds having high antitumor activity coupled with desirably low cardiotoxicity.
Inventors
- 👤 David W. Henry
- 👤 George L. Tong
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:31
CPC Classifications
C; C07; C07H; C07H15/00; C07H15/20; C07H15/24; C07H15/252
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
21 words
Compounds having the structure ##STR2## wherein R represents 4-phenyl, 4-chloro, 3,4-dichloro or 3-nitro, and the pharmaceutically acceptable salts of these compounds.
Claim 2
Dependent Claim
21 words
Compounds having the structure ##STR2## wherein R represents 4-phenyl, 4-chloro, 3,4-dichloro or 3-nitro, and the pharmaceutically acceptable salts of these compounds.
Claim 3
Dependent Claim
10 words
The compound of claim 1 which is daunomycin 4-phenylbenzhydrazone hydrochloride.
Claim 4
Dependent Claim
10 words
The compound of claim 1 which is daunomycin 4-chlorobenzhydrazone hydrochloride.
Claim 5
Dependent Claim
10 words
The compound of claim 1 which is daunomycin 3,4-dichlorobenzhydrazone hydrochloride.
Claim 6
Dependent Claim
10 words
The compound of claim 1 which is daunomycin 3-nitrobenzhydrazone hydrochloride.
References Cited (Backward Citations)
US3957755A
Cited
US3965088A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-11-13 | 1982-05-15 | 1982-11-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-11-13 | 1986-05-15 | 1986-11-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-11-13 | 1990-05-15 | 1990-11-14 | $7700.00 | Window Closed / Lapsed |