The present invention concerns compounds of the formula: ##STR1## wherein R.sup.1 is hydrogen, a hydroxy group or a methoxy group; R.sup.2 is hydrogen or a methyl group; R.sup.3 is hydrogen or a methyl group; Y is a secondary amino group (NHalkyl) or a tertiary amino group (N(alkyl).sub.2); and Z is hydrogen or a halogen. The invention further provides a method of inhibiting topoisomerase II using a compound having the structure: ##STR2## wherein R.sup.1 is hydrogen, a hydroxy group or a methoxy group; R.sup.2 is hydrogen or a methyl group; R.sup.3 is hydrogen or a methyl group; Y is a halogen, secondary amino group (NHalkyl) or a tertiary amino group (N(alkyl).sub.2); and Z is hydrogen or a halogen. The invention further concerns pharmaceutical compositions which comprise the above-identified compound or the acid salts thereof, and the use of the compound or compositions for treating a malignancy in a subject.
本发明涉及以下结构的化合物:##STR1##其中R.sup.1为氢、羟基或甲氧基;R.sup.2为氢或甲基;R.sup.3为氢或甲基;Y为次级
氨基(NHalkyl)或三级
氨基(N(alkyl).sub.2);Z为氢或卤素。该发明还提供了一种利用具有以下结构的化合物抑制拓扑异构酶II的方法:##STR2##其中R.sup.1为氢、羟基或甲氧基;R.sup.2为氢或甲基;R.sup.3为氢或甲基;Y为卤素、次级
氨基(NHalkyl)或三级
氨基(N(alkyl).sub.2);Z为氢或卤素。该发明还涉及包含上述化合物或其酸盐的药物组合物,以及利用该化合物或组合物治疗受试者的恶性肿瘤的用途。