Cerium (IV) ammonium nitrate (CAN)-mediated regioselective synthesis and anticancer activity of 6-substituted 5,8-dimethoxy-1,4-naphthoquinone
作者:Guang Huang、Hui-Ran Zhao、Qing-Qing Meng、Wen Zhou、Qi-Jing Zhang、Jin-Yun Dong、Jia-Hua Cui、Shao-Shun Li
DOI:10.1016/j.cclet.2016.10.034
日期:2017.7
2-substituted 1,4,5,8-tetramethoxynaphthalenes with CAN in EtOAc/H2O in comparatively high yields. An interesting finding was that apart from the reported electron-withdrawing effects of substituents on position 2 of naphthalene ring, regioselective synthesis of 6-DMNQ was largely dependent on the steric effects in CAN-mediated oxidation. The selective cytotoxicities of 6-DMNQ from the in vitro cell-based assays
摘要6-取代的5,8-O-二甲基-1,4-萘醌(6-DMNQ)是一种有前途的抗癌支架,是通过2-取代的1,4,5,8-四甲氧基萘与CAN的氧化脱甲基作用选择性制备的。 EtOAc / H 2 O的产率较高。一个有趣的发现是,除了已报道的取代基在萘环2位上的吸电子作用外,6-DMNQ的区域选择性合成很大程度上取决于CAN介导的氧化反应中的空间位阻作用。在癌细胞和正常细胞之间表现出了基于体外细胞试验的6-DMNQ的选择性细胞毒性。而且,大多数含硫的6-DMNQ衍生物显示出比相应的含氧衍生物更好的抗癌活性,