A series of novel structurally simple analogues based on nitidine was designed and synthesized in search of potent anticancer agents. The antitumor activity against human cancer cell lines (HepG2, A549, NCI-H460, and CNE1) was performed by 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyl tetrazolium bromide (MTT) assay in vitro. The results showed that some of them had good anticancer activities, especially derivatives with a [(dimethylamino)ethyl]amino side chain in the C-6 position. Planar conjugated compounds 15a, 15b, and 15c, with IC50 values of 1.20 μM, 1.87 μM, and 1.19 μM against CNE1 cells, respectively, were more active than nitidine chloride. Compound 15b and compound 15c with IC50 values of 1.19 μM and 1.37 μM against HepG2 cells and A549 cells demonstrated superior activities to nitidine. Besides, compound 5e which had a phenanthridinone core displayed extraordinary cytotoxicity against all test cells, particularly against CNE1 cells with the IC50 value of 1.13 μM.
一系列基于尼地定的新型结构简单的类似物被设计并合成,以寻找有效的抗癌药物。通过体外3-(
4,5-二甲基噻唑-2-基)-2,5-二苯基
四唑溴化物(M
TT)试验评估了对人类癌
细胞系(HepG2、A549、NCI-H460和CNE1)的抗肿瘤活性。结果显示其中一些具有良好的抗癌活性,特别是在C-6位置具有[(二甲基
氨基)乙基]
氨基侧链的衍
生物。平面共轭化合物15a、15b和15c对CNE1细胞的IC50值分别为1.20μM、1.87μM和1.19μM,比尼地定
氯化物更活跃。具有对HepG2细胞和A549细胞的IC50值分别为1.19μM和1.37μM的化合物15b和化合物15c表现出比尼地定更优越的活性。此外,具有苯并
喹啉酮核心的化合物5e对所有测试细胞表现出非凡的细胞毒性,特别是对CNE1细胞,IC50值为1.13μM。