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[摘要]
目的 研究石崖茶(亮叶杨桐Adinandra nitida干燥叶)醋酸乙酯萃取部位的化学成分。方法 通过硅胶、凝胶Sephadex LH-20、ODS等多种柱色谱方法分离纯化,运用1H-NMR、13C-NMR、ESI-MS等多种波谱技术鉴定化合物结构。结果 从石崖茶75%乙醇提取物的醋酸乙酯萃取部位分离鉴定出14个化合物,包括9个黄酮类化合物:芹菜素(1)、柚皮素(2)、木犀草素(3)、金圣草素(4)、表儿茶素(5)、槲皮素(6)、槲皮苷(7)、山茶苷A(8)、山茶苷B(9);3个酚酸类化合物:对甲氧基苯酚(10)、原儿茶酸(11)、3,3',4,4'-四羟基联苯(12);1个香豆素类化合物东莨菪内酯(13)和棕榈酸(14)。结论 化合物3、10~14为首次从石崖茶中分离得到,其中化合物3、10、12和13为首次从山茶科植物中分离鉴定。
[Key word]
[Abstract]
Objective To study the chemical constituents from the ethyl acetate extract of the leaves of Adinandra nitida. Methods Several column chromatography including silica gel, Sephadex LH-20 gel, and ODS were applied in isolation and purification. The structures were elucidated on the basis of physicochemical properties and spectral data from 1H-NMR, 13C-NMR, ESI-MS and so on. Results Nine flavonoids, three phenolic acids, and two other compounds were isolated and determined as apigenin (1), naringenin (2), luteolin (3), chrysoeriol (4), (-)-epicatechin (5), quercetin (6), quercitrin (7), camellianin A (8), camellianin B (9), p-methoxyphenol (10), protocatechuic acid (11), 3,3',4,4'-tetrahydroxybiphenyl (12), scopoletin (13), and palmitic acid (14). Conclusion Compounds 3, 10-14 are firstly isolated from the plant of A. nitida and compounds 3, 10, 12, and 13 are obtained from Theaceae for the first time.
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[基金项目]
江苏省科技基础设施建设计划(BM2014047);广西自然科学基金项目(2016GXNSFBA380200);广西中医药大学校级课题(YB14001)