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Last Updated: May 1, 2024

Claims for Patent: 4,138,415

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Summary for Patent: 4,138,415

Title:	1,4-Bis(aminoalkylamino)-anthraquinones and leuco derivatives thereof
Abstract:	This disclosure describes 1,4-bis(substituted-amino)-5,6-dihydroxyanthraquinones and 1,4,5-tris(substituted-amino)-8-hydroxyanthraquinones useful as chelating agents, as curing catalysts for epoxy resins, and for inhibiting the growth of transplanted mouse tumors.
Inventor(s):	Murdock; Keith C. (Pearl River, NY), Child; Ralph G. (Pearl River, NY)
Assignee:	American Cyanamid Company (Stamford, CT)
Application Number:	05/903,292
Patent Claims:	1. A compound selected from the group consisting of those of the formula: ##STR5## wherein R.sub.1 and R.sub.2 are each individually selected from the group consisting of hydrogen, methyl, ethyl and 2-hydroxyethyl; R.sub.3 is hydrogen or hydroxy; R.sub.4 is hydrogen or a moiety of the formula: ##STR6## wherein R.sub.1 and R.sub.2 are as hereinabove defined with the proviso that one of R.sub.3 and R.sub.4 must be hydrogen but R.sub.3 and R.sub.4 may not both be hydrogen; and the pharmacologically acceptable acid-addition salts thereof. 2. A compound selected from the group consisting of those of the formula: ##STR7## wherein R.sub.1 and R.sub.2 are each individually selected from the group consisting of hydrogen, methyl, ethyl and 2-hydroxyethyl; R.sub.3 is hydrogen or hydroxy; R.sub.4 is hydrogen or a moiety of the formula: ##STR8## wherein R.sub.1 and R.sub.2 are as hereinabove defined with the proviso that one of R.sub.3 and R.sub.4 must be hydrogen but R.sub.3 and R.sub.4 may not both be hydrogen; the tautomers thereof; and the pharmacologically acceptable acid-addition salts thereof. 3. The compound according to claim 1 wherein R.sub.1 and R.sub.2 are both methyl, R.sub.3 is hydrogen, and R.sub.4 is 2-dimethylaminoethylamino; 1,4,5-tris[(2-dimethylaminoethyl)amino]-8-hydroxyanthraquinone. 4. The compound according to claim 1 wherein R.sub.1 and R.sub.2 are both hydrogen, R.sub.3 is hydroxy, and R.sub.4 is hydrogen; 1,4-bis[(2-aminoethyl)amino]-5,6-dihydroxyanthraquinone. 5. The compound according to claim 2 wherein R.sub.1 and R.sub.2 are both ethyl, R.sub.3 is hydrogen, and R.sub.4 is 2-diethylaminoethylamino; leuco-1,4,5-tris[(2-diethylaminoethyl)amino]-8-hydroxyanthraquinone. 6. The compound according to claim 2 wherein R.sub.1 is hydrogen, R.sub.2 is ethyl, R.sub.3 is hydroxy, and R.sub.4 is hydrogen; leuco-1,4-bis[(2-ethylaminoethyl)amino]-5,6-dihydroxyanthraquinone.

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