overexpression of P-glycoprotein plays an important role in the process of multidrug resistance (MDR). P-gp inhibitors are one of the effective strategies to reverse tumor MDR. Novel P-gp inhibitors with phthalazinone scaffolds were designed, synthesized and evaluated. Compound 26 was found to be the most promising for further study. Compound 26 possessed high potency (EC50 = 46.2 ± 3.5 nM) and low cytotoxicity
P-糖蛋白的过度表达在多药耐药性(MDR)的过程中起着重要作用。P-gp
抑制剂是逆转肿瘤MDR的有效策略之一。设计,合成和评估了具有
酞嗪酮骨架的新型P-gp
抑制剂。发现化合物26是最有希望进行进一步研究的化合物。化合物26具有高效力(
EC50 = 46.2±3.5 nM)和低细胞毒性。26具有对耐
阿霉素K56 / A02细胞的高MDR逆转活性。反转倍数(RF)值达到44.26。26还增加了
阿霉素(DOX或A
DM)或其他具有不同结构的MDR相关抗癌药物的积累。总之,化合物26作为P-gp
抑制剂的良好功能值得进一步研究。