| abstract |
There are new bis (aminomethyl) anthraquinone derivatives of the formula and their salts with physiologically acceptable acids, and processes for their preparation. The new compounds are effective against protozoa, viruses and cancer.n n n In the above formula, R 1 and R 2 , which are the same or different, represent hydrogen, straight-chain or branched alkyl having one to four carbon atoms, or R 1 and R 2 together mean an alkylene chain having four, five or six carbon atoms, the form a five-, six- or seven-membered heterocyclic ring which may contain a further heteroatom from the group consisting of nitrogen, oxygen and sulfur and which in turn may be substituted by straight-chain or branched alkyl having one to four carbon atoms, and R 3 denotes hydrogen or the hydroxyl group. |