College of Pharmacy and Research Institute of Pharmaceutical Science, Seoul National University , Daehak-Dong, Gwanak-Gu, Seoul, Republic of Korea.
J Enzyme Inhib Med Chem. 2012 Feb;27(1):1-4. doi: 10.3109/14756366.2011.562203. Epub 2011 Jul 8.
A methanolic extract of the roots of Polygala tenuifolia (Polygalaceae) significantly attenuated nitric oxide (NO) production in lipopolysaccharide (LPS)-stimulated BV2 microglia cells. Five xanthones, 1-hydroxy-7-methoxyxanthone (1), 3,6-dihydroxy-1,2,7-trimethoxyxanthone (2), 1,3,6-trihydroxy-2,7-dimethoxyxanthone (3), 1,7-dihydroxy-2,3-dimethoxyxanthone (4) and 1,7-dihydroxy-3-methoxyxanthone (5), and five phenylpropanoids, 4-hydroxy-3-methoxypropiophenone (6), methyl 4-hydroxy-3-methoxycinnamic acid (7), 3,4,5-trimethoxycinnamic acid (8), 4-methoxycinnamic acid (9) and β-d-(3-O-sinapoyl) fructofuranosyl-α-d-(6-O-sinapoyl)glucopyranoside (10), were isolated from CHCl(3) fraction using bioactivity-guided fractionation. Among these compounds, compounds 1, 2, 4, 5 and 7 showed significant inhibitory effects on LPS-induced NO production in BV2 microglia cells at the concentration ranging from 10.0 to 100.0 μM.
远志根的甲醇提取物(远志科)显著减弱脂多糖(LPS)刺激的 BV2 小胶质细胞中一氧化氮(NO)的产生。从 CHCl3 部分用生物活性导向的分段分离出五个黄烷酮,1-羟基-7-甲氧基黄烷酮(1),3,6-二羟基-1,2,7-三甲氧基黄烷酮(2),1,3,6-三羟基-2,7-二甲氧基黄烷酮(3),1,7-二羟基-2,3-二甲氧基黄烷酮(4)和 1,7-二羟基-3-甲氧基黄烷酮(5),以及五个苯丙素类化合物,4-羟基-3-甲氧基苯丙酮(6),4-羟基-3-甲氧基肉桂酸甲酯(7),3,4,5-三甲氧基肉桂酸(8),4-甲氧基肉桂酸(9)和β-D-(3-O-芥子酰基)果糖呋喃糖苷-α-D-(6-O-芥子酰基)葡萄糖苷(10)。在这些化合物中,化合物 1、2、4、5 和 7 在 10.0 至 100.0 μM 的浓度范围内对 LPS 诱导的 BV2 小胶质细胞中 NO 的产生表现出显著的抑制作用。