| abstract |
An antitumor 5-nitrobenzo[de]isoquinoline-1,3-dione of the formula I ##STR1## where n is 1 or 2, R 1 and R 2 are identical or different and are each hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -hydroxyalkyl, pyrrolidinyl, morpholino, piperidinyl or piperacinyl and R 3 and R 4 are identical or different and are each hydrogen, C 1 -C 6 -alkyl, C 1 -C 6 -acyl, C 2 --C 7 -alkoxycarbonyl, ureyl, aminocarbonyl or C 2 -C 7 -alkylaminocarbonyl, and its salts with physiologically tolerated acids, are described. |