Synthesis and bioactivity of novel xanthone and thioxanthone <scp>l</scp>-rhamnopyranosides
作者:Gao-peng Song、Su-mei Li、Hong-zong Si、Yi-bin Li、Ya-sheng Li、Ji-hong Fan、Qian-qian Liang、Hui-bing He、Han-ming Ye、Zi-ning Cui
DOI:10.1039/c5ra02846a
日期:——
A series of xanthone and thioxanthone rhamnopyranosides were designed and synthesized. Their in vitro cytotoxicity and topoisomerase inhibitory activity were evaluated. The bioassay results indicated that the introduction of the 2,3-di-O-acetyl-α-L-rhamnopyranosyl moiety to anthracene was helpful to improve the cytotoxicity in vitro. The modifications of anthracene had an important effect on the tumor
设计并合成了一系列的an吨酮和噻吨酮鼠李吡喃糖苷。评价了它们的体外细胞毒性和拓扑异构酶抑制活性。生物测定结果表明,将2,3-二-O-乙酰基-α - L-鼠李糖基吡喃糖基部分引入蒽有助于改善体外细胞毒性。蒽的修饰对肿瘤细胞的生长抑制活性有重要影响。有趣的是,在这些蒽类似物中观察到了细胞毒性和topo I活性之间的一致性,这表明将聚亚甲基胺侧链或吡唑环并入蒽醌生色团能够同时增强topo I抑制活性和细胞毒性。其中,发现了作为新的先导化合物的化合物11,它对12种肿瘤细胞株具有广泛的体外细胞毒性,并具有潜在的抗多药耐药性。它证明了化合物11能诱导细胞凋亡的KB细胞通过内部和外部途径。流式细胞仪分析显示,用化合物11处理KB细胞会导致细胞凋亡,并伴随细胞周期停滞在G2 / M期。此外,化合物11引起拓扑异构酶I催化活性的显着且剂量依赖性的抑制。