Substituted benz[ a ]acridines and benz[ c ]acridines as mammalian topoisomerase poisons
作者:Darshan Makhey、Chiang Yu、Angela Liu、Leroy F. Liu、Edmond J. LaVoie
DOI:10.1016/s0968-0896(00)00048-1
日期:2000.5
benz[a]acridine and benz[c]acridine derivatives were synthesized and their relative activity as topoisomerase poisons was determined. While the benz[c]acridine derivatives evaluated as part of this study were devoid of topoisomerase poisoning activity, several dihydrobenz[a]acridines were able to enhance DNA cleavage in the presence of topo I. In contrast to certain protoberberine derivatives that did
与原小ber碱生物碱有关的Coralyne和其他几种合成的苯并[a,g]喹啉鎓衍生物已显示出作为拓扑异构酶毒物的活性。这些化合物的特征是存在带正电的亚胺基,据推测与它们的药理特性有关。本研究的目的是设计出这些化合物的稳定的不带电生物等排体。合成了几种相似取代的苯并[a] ac啶和苯并[c] ac啶衍生物,并确定了它们作为拓扑异构酶毒物的相对活性。虽然作为这项研究的一部分评估的苯并[c] void啶衍生物没有拓扑异构酶中毒活性,但在存在topo I的情况下,几种二氢苯并[a] ac啶能够增强DNA裂解。与某些确实表现出作为topo II毒物活性的原小ber碱衍生物相反,在topo II存在的情况下,苯并[a] s啶衍生物均不能增强DNA裂解。在所研究的苯并[a] ac啶中,5e-6-二氢-3,4-亚甲二氧基-9,10-二甲氧基苯并[a] r啶13e是最有效的topo I毒物,其功效与珊瑚烯相