Polycyclic polyprenylated acylphloroglucinol and phenolic metabolites from the aerial parts of Hypericum elatoides and their neuroprotective and anti-neuroinflammatory activities
作者:Xi-Tao Yan、Zhen An、Yucui Huangfu、Yuan-Teng Zhang、Chun-Huan Li、Xin Chen、Pei-Liang Liu、Jin-Ming Gao
DOI:10.1016/j.phytochem.2018.12.011
日期:2019.3
A phytochemical study on the aerial parts of Hypericum elatoides led to the isolation of a previously undescribed polycyclic polyprenylated acylphloroglucinol derivative, hyperelatone A, seven previously undescribed phenolic metabolites, hyperelatones B-H, along with ten known analogues. The structures of hyperelatones A-H were elucidated by 1D and 2D NMR spectroscopy, HRESIMS experiment, single-crystal
对金丝桃地上部分的植物化学研究导致分离出一种以前未描述的多环聚异戊二烯化酰基间苯三酚衍生物,hyperelatone A,七种以前未描述的酚类代谢物,hyperelatones BH,以及十种已知的类似物。通过一维和二维核磁共振光谱、HRESIMS 实验、单晶 X 射线衍射和实验和计算 ECD 光谱的比较以及化学衍生化,阐明了超弹性体 AH 的结构。评估了所有化合物对过氧化氢 (H2O2) 诱导的大鼠嗜铬细胞瘤 PC-12 细胞损伤的神经保护活性和对 BV-2 小胶质细胞中脂多糖 (LPS) 诱导的一氧化氮 (NO) 产生的抑制作用。Hyperelatones BD 和 H,辛可宁 Ib,和tenuiside A 在1.0-100.0 μM 的浓度下显示出明显的神经保护作用。Hyperelatones D、G 和 H、(-)-表儿茶素、tenuiside A 和 (Z)-3-己烯基-β-D