摘要
目的 研究望春花Magnolia biondii Pamp.花蕾化学成分及其乙酰胆碱酯酶体外抑制活性.方法 望春花花蕾50%丙酮提取物采用Diaion HP-20、Toyopearl HW-40C、ODS、半制备HPLC进行分离纯化,根据理化性质及波谱数据鉴定所得化合物的结构.按课题组前期方法测定化合物的乙酰胆碱酯酶体外抑制活性.结果 从中分离得到 17 个化合物,分别鉴定为 crassifolioside(1)、magnoloside B(2)、芦丁(3)、异槲皮苷(4)、槲皮素(5)、northalifoline(6)、cordysinin B(7)、脱氧胸腺嘧啶核苷(8)、吲唑(9)、dihydrodehydrodiconiferyl alcohol(10)、秦皮乙素(11)、C-藜芦酰乙二醇(12)、3,4-二羟基苯乙醇(13)、3-甲氧基-4-羟基苯乙醇(14)、原儿茶酸(15)、2,4,6-三甲氧基苯酚(16)、丁香酸(17).结论 化合物 1～17 均为首次从该植物中分离得到,在 20 μmol/L浓度下均未显示出乙酰胆碱酯酶抑制活性.
Abstract
AIM To study the chemical constituents from flower buds of Magnolia biondii Pamp.and their in vitro acetylcholinesterase inhibitory activities.METHODS The 50% acetone extract from the flower buds of M.biondii was isolated and purified by Diaion HP-20,Toyopearl HW-40C,ODS and semi-preparative HPLC,then the structures of obtained compounds were identified by physicochemical properties and spectral data.The in vitro acetylcholinesterase inhibitory activities of these compounds were determined according to previous method established by research group.RESULTS Seventeen compounds were isolated and identified as crassifolioside(1),magnoloside B(2),rutin(3),isoquercitrin(4),quercetin(5),northalifoline(6),cordysinin B(7),thymidine(8),indazole(9),dihydrodehydrodiconiferyl alcohol(10),aesculetin(11),C-veratroylglycol(12),3,4-dihydroxyphenylethanol(13),3-methoxy-4-hydroxyphenylethanol(14),3,4-dihydroxybenzoic acid(15),2,4,6-trimethoxyphenol(16),syringic acid(17).CONCLUSION Compounds 1-17 are isolated from this plant for the first time,none of which show acetylcholinesterase inhibitory activities at the concentration of 20 μmol/L.
基金项目
国家自然科学基金项目(82003946)
2016年中央引导地方科技发展专项项目(豫财科[2016]149号)
国家科技期刊平台
NSTL
万方数据