US4456552A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,4-Bis(substituted-amino)-5,8-dihydroxyanthraquinones and leuco bases thereof
Assignee: Immunex Corp
•
Filing: 1981-03-02
•
Granted: 1984-06-26
•
Expires: 2001-03-02
Abstract
Abstract This disclosure describes symmetrical 1,4-bis(substituted-amino)-5,8-dihydroxyanthraquinones useful as chelating agents and for inhibiting the growth of transplanted mouse tumors.
Inventors
- 👤 Keith C. Murdock
- 👤 Frederick E. Durr
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 17:22
CPC Classifications
A; A61; A61K; A61K31/00; A61K31/13; A61K31/135
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-aminoethylamino)ethylamino]-5,8-dihydroxyanthaquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 2
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-aminoethylamino)ethylamino]-5,8-dihydroxyanthaquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 3
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-methylaminoethylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 4
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-methylaminoethylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 5
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-dimethylaminoethylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 6
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2-dimethylaminoethylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 7
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2,3-dihydroxypropylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 8
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(2,3-dihydroxypropylamino)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 9
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(N-(β-hydroxyethyl)trifluoroacetamido)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
Claim 10
Dependent Claim
22 words
A compound selected from the group consisting of 1,4-bis[2-(N-(β-hydroxyethyl)trifluoroacetamido)ethylamino]-5,8-dihydroxyanthraquinone, the leuco base and tautomer thereof and the pharmacologically acceptable acid-addition salts thereof.
References Cited (Backward Citations)
GB1157506A
Cited
US3646072A
Cited
US4166822A
Cited
US3857864A
Cited
US3904660A
Cited
GB1475081A
Cited
US4197249A
Cited
US4170564A
Cited
US4310666A
Cited
US4278689A
Cited
US4296030A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-06-26 | 1987-12-26 | 1988-06-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-26 | 1991-12-26 | 1992-06-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-26 | 1995-12-26 | 1996-06-26 | $7700.00 | Window Closed / Lapsed |