Synthesis and Biological Evaluation of Steviol Derivatives with Improved Cytotoxic Activity and Selectivity
作者:Jian-Song Liu、Li-Ping Luo、Geng Xu、Xiao-Jia Xu、Chao Xu、E Ou、Han-Yuan Zhang、Zheng-Qiang Yuan、Yu Zhao
DOI:10.1021/acs.jnatprod.2c00161
日期:2022.8.26
with interesting pharmacological activity. Several steviol derivatives with an exo-methylene cyclopentanone unit were discovered as potent antitumor agents. However, their poor selectivity for tumor cells relative to normal cells reduces their prospects as potential anticancer drugs. In this study, based on previous work, 32 steviol derivatives, including 28 new analogues, were synthesized. Their cytotoxicity
甜菊醇是一种具有有趣药理活性的ent -kaurene 二萜类化合物。发现了几种具有外-亚甲基环戊酮单元的甜菊醇衍生物作为有效的抗肿瘤剂。然而,相对于正常细胞,它们对肿瘤细胞的低选择性降低了它们作为潜在抗癌药物的前景。在本研究中,在前人工作的基础上,合成了 32 种甜菊醇衍生物,包括 28 种新的类似物。评估了它们对肿瘤细胞和正常细胞的细胞毒性。几个新的衍生物,例如7a、7h和8f,获得了改善的细胞毒选择性和抗增殖活性,并研究了构效关系的相关性。新化合物8f对 Huh7 细胞具有有效的抗增殖活性(IC 50 = 2.6 μM),对相应的正常细胞 HHL5 具有非常弱的细胞毒性(IC 50 = 97.0 μM)。进一步研究表明,8f通过抑制 PI3K/Akt/mTOR 和 NF-κB 通路以及抑制 PI3K/Akt/mTOR 和 NF-κB 通路,使细胞周期停滞在 G0/G1 期并导致活性氧过度产生,降低线粒体膜电位,并诱导