Several 11-ethyl-2,3-dimethoxy-8,9-methylenedioxy-11H-isoquino[4,3-c]cinnolin-12-ones with varied functionality on the ethyl substituent have exhibited potent topoisomerase I (TOP1) targeting activity and antitumor activity. The influence of various polar substituents at the 2-position of the 11-ethyl substituent, including N-methylamine, N-isopropylamine, hydroxyl, and hydroxylamino groups, on TOP1-targeting
几个在乙基取代基上具有不同功能的11-乙基-
2,3-二甲氧基-8,9-亚甲基二氧基-11H-
异喹啉[4,3-c] cinnolin-12-具有强力的拓扑异构酶I(TOP1)靶向活性和抗肿瘤活性。评估了11-乙基取代基的2位上的各种极性取代基(包括N-甲基胺,N-
异丙基胺,羟基和羟
氨基)对TOP1靶向活性和细胞毒性的影响。在具有
MDA-MB-435人肿瘤异种移植物的无胸腺裸鼠中,还评估了N-甲基胺和N-
异丙基胺衍
生物作为抗肿瘤剂。肠胃外或口服给药时,两种化合物均具有抗肿瘤活性。