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[摘要]
目的 研究曼地亚红豆杉Taxus media枝叶的化学成分。方法 通过硅胶、凝胶Sephadex LH-20、ODS等色谱方法分离纯化,运用1H-NMR、13C-NMR、ESI-MS等多种波谱技术鉴定化合物结构。结果 从曼地亚红豆杉乙醇提取物的石油醚、醋酸乙酯萃取部位分离鉴定出18个化合物,包括8个紫杉烷二萜类化合物:taxinine-11,12-oxide(1)、9α,10β-二乙酰基-2α-羟基-5α-桂皮酰基-3,11-环化紫杉烷-4(20)-烯-13-酮(2)、2-去乙酰氧基紫杉宁E(3)、7,9-二去乙酰基紫杉宁B(4)、紫杉吉酚(5)、9-去乙酰基紫杉宁A(6)、9-去乙酰基紫杉宁(7)、10-去乙酰基巴卡亭Ⅲ(8);5个黄酮类化合物:山柰酚(9)、香橙素(10)、芹菜素(11)、金松双黄酮(12)、银杏双黄酮(13);3个酚酸类化合物:对羟基苯甲醛(14)、对羟基苯甲酸(15)、邻苯二酚(16);以及β-谷甾醇(17)、正二十烷-10-醇(18)。结论 化合物18 为首次从红豆杉科植物中发现,化合物1~4、6、7、10、14~16 为首次从曼地亚红豆杉中分离得到。
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[Abstract]
Objective To study the chemical constituents from the petroleum ether and ethyl acetate extract of the twig and leaves of Taxus media. Methods Several column chromatography including silica gel, Sephadex LH-20 gel, ODS and so on were applied in isolation and purification. The structures were elucidated on the basis of physicochemical properties and spectral data. Results Eight taxane diterpenoids, five flavonoids, three phenolic acids, and two other compounds were isolated and determined as taxinine-11,12-oxide (1), 2-deacetoxytaxuspine C (2), 2-deacetoxytaxinine E (3), 7,9-deacetyltaxinine B (4), taxagifin (5), 9-deacetyltaxinine A (6), 9-deacetyltaxinine (7), 10-desacetylbaccatin Ⅲ (8), kaempferol (9), aromadendrin (10), apigenin (11), sciadopitysin (12), ginkgetin (13), 4-hydroxy-benzaldehyde (14), p-hydroxybenzoic acid (15), pyrocatechol (16), β-sitosterol (17), and eicosan-10-ol (18), respectively. Conclusion Compounds 1-4, 6, 7, 10, 14-16 are firstly isolated from the plant of T. media, and compound 18 is obtained from the Taxaceae 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)