from an Elephantopus scaber extract. Their inhibition activities against non-small-cell lung cancer cells were screened, and preliminary structure–activity relationships were also established. Among them, monomeric analog 1u and dimeric analog 3d exhibited superior anti-non-small-cell lung cancer cytotoxic potencies with IC50 values of 4.3 and 0.7 μM against A549 cells, respectively, and were more
两个系列的germacran 型
倍半萜内酯是通过半合成调制赤霞珠C 生产的,赤霞珠C 是通过标准
化学转化从Elephantopus scaber
提取物制备的。筛选了它们对非小细胞肺癌细胞的抑制活性,并建立了初步的构效关系。其中,单体类似物1u和二聚体类似物3d表现出优异的抗非小细胞肺癌细胞毒能力,对 A549 细胞的 IC 50值分别为 4.3 和 0.7 μM,并且比
顺铂和标准
倍半萜内酯更有效,
小白菊内酯和沙贝托平。进一步的研究表明,化合物1u和3d通过激活 A549 细胞中的线粒体途径引起 G2/M 期阻滞并诱导细胞凋亡。总的来说,获得的结果表明化合物1u和3d是有前途的抗非小细胞肺癌先导化合物。