Anti-viral and cytotoxic norbisabolane sesquiterpenoid glycosides from Phyllanthus emblica and their absolute configurations
作者:Jun-Jiang Lv、Shan Yu、Ying Xin、Rong-Rong Cheng、Hong-Tao Zhu、Dong Wang、Chong-Ren Yang、Min Xu、Ying-Jun Zhang
DOI:10.1016/j.phytochem.2015.06.001
日期:2015.9
Phyllanthus spp., 14 highly oxygenated norbisabolane sesquiterpenoids, phyllaemblicins H1-H14, were isolated from the roots of Phyllanthus emblica Linn, along with phyllaemblicins B and C and glochicoccinoside D. Their structures were determined on the basis of detailed spectroscopic analysis and chemical methods. Determination of absolute configurations of these compounds was facilitated by theoretical
为了从 Phyllanthus spp. 中鉴定出抗病毒和细胞毒性化合物,从 Phyllanthus emblica Linn 的根中分离出了 14 种高度氧化的降冰糖烷倍半萜类化合物 phyllaemblicins H1-H14,以及 phyllaemblicins B 和 C 以及它们的结构是钩端花皂苷 D。根据详细的光谱分析和化学方法确定。使用时间依赖密度泛函理论 (TDDFT) 对苷元组分进行电子圆二色性 (ECD) 光谱的理论计算,以及对单糖进行柱前衍生物/手性 HPLC 分析,有助于确定这些化合物的绝对构型。已知的球藻糖苷 D 对甲型流感病毒株 H3N2 和手足口病毒 EV71 显示出有效的活性,IC50 值为 4.5±0.6 和 2.6±0。分别为 7 μg/ml。Phyllaemblicin H1 对人癌细胞系 A-549 和 SMMC-7721 显示出中等的细胞毒性,IC50