A Bioactive Resveratrol Trimer from the Stem Bark of the Sri Lankan Endemic Plant Vateria copallifera.

A Bioactive Resveratrol Trimer from the Stem Bark of the Sri Lankan Endemic Plant Vateria copallifera.
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来自斯里兰卡特有植物 Vateria copallifera 的茎皮的生物活性白藜芦醇三聚体。

DOI:
10.1021/acs.jnatprod.7b00892
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发表时间:
2018
影响因子:
5.1
通讯作者:
Tillekeratne,LMViranga
Tillekeratne,LMViranga
中科院分区:
生物学2区
文献类型:
--
作者:
Samaradivakara,SaroopaP;Samarasekera,Radhika;Handunnetti,ShiromaM;Weerasena,OVDSJagathpriya;Al-Hamashi,AyadA;Slama,JamesT;Taylor,WilliamR;Alhadidi,Qasim;Shah,ZahoorA;Perera,Lalith;Tillekeratne,LMViranga

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采用生物活性导向的正相、反相和体积排阻柱层析相结合的方法,从紫菀树皮提取物中分离得到了一种新的白藜芦醇三聚体--vateriferol(1),它具有四个顺式次甲基质子,并构成四个连续的立体中心。根据其光谱数据确定了结构。在体外评价了Vateriferol(1)的抗氧化能力、酶抑制活性、对许多癌细胞系的生长抑制活性、神经保护活性和抗炎活性。在缺氧和缺糖的PC 12细胞中,1.5 μM的Vateriferol(1)表现出AChE抑制活性(IC508.4 ± 0.2 μM)、ORAC活性(2079 ± 0.20 TE/g)和神经保护活性,并在14.7和73.6 μM的脂多糖刺激的SIM-A9小胶质细胞中降低NO水平。在147.2 μM时,Vateriferol(1)对受试细胞系表现出较弱的细胞毒性效力(<50%生长抑制)。
A new resveratrol trimer, vateriferol (1), having fourcis-oriented methine protons and constituting four contiguous stereocenters, was isolated from the bark extract ofVateria copalliferaby bioassay-guided fractionation using a combination of normal, reversed phase, and size exclusion column chromatography. The structure was established based on its spectroscopic data. Vateriferol (1) was evaluated in vitro for its antioxidant capacity, enzyme inhibitory activity, growth inhibitory activity on a number of cancer cell lines, neuroprotective activity, and anti-inflammatory activity. Vateriferol (1) exhibited AChE inhibitory activity (IC508.4 ± 0.2 μM), ORAC activity (2079 ± 0.20 TE/g), and neuroprotective activity at 1.5 μM using PC12 cells deprived of oxygen and glucose and lowered NO levels in lipopolysaccharide-stimulated SIM-A9 microglial cells at 14.7 and 73.6 μM. Vateriferol (1) exhibited weak cytotoxic potency (<50% growth inhibition) against the tested cell lines at 147.2 μM.
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