- Aminonaphthacene derivatives and their use
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Aminonaphthacene derivatives of the formula: STR1 wherein A is either one of the following groups: STR2 wherein R1 is a hydrogen atom or a group of the formula: --COR7, R2 and R3 are each a lower alkoxy group or, when taken together, represent an ethylenedioxy group or an oxo group, R4 and R5 are both hydrogen atoms or either one of them is a hydrogen atom and the other is a group of the formula: --COR7, R6 is a hydrogen atom, a hydroxyl group or a group of the formula: --OCOR7 and R7 is a lower alkyl group, a halo(lower)alkyl group, a phenyl group or a halophenyl group, which are useful as anti-microbial and/or anti-tumor agents, or as intermediates in their production.
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