[关键词]
[摘要]
目的 对刺蕊草属植物广藿香Pogostemon cablin中的非挥发性化学成分进行研究。方法 采用硅胶、DM130大孔树脂、ODS、Sephadex LH-20、TLC、半制备HPLC等多种色谱技术对其化学成分进行分离纯化,依据理化性质、MS、1D NMR和2D NMR等波谱数据鉴定化合物结构。结果 从广藿香95%乙醇提取物中共分离得到25个化合物,分别鉴定为2α,3β,19α,23α,30β-五羟基齐墩果-12-烯-28-酸(1)、2α,3β,19α,23α,29α-五羟基齐墩果-12-烯-28-酸(2)、齐墩果酸(3)、无羁萜酮(4)、β-谷甾醇(5)、豆甾醇(6)、豆甾-4-烯-3,6-二酮(7)、6-羟基豆甾-4-烯-3-酮(8)、6-羟基豆甾-4,22-二烯-3-酮(9)、5-羟基-7,3',4'-三甲氧基-二氢黄酮(10)、5,4'-二羟基-7,3'-二甲氧基-二氢黄酮(11)、5-羟基-7,4'-二甲氧基-二氢黄酮(12)、圣草酚(13)、3,3',4',7-四甲氧基-5-羟基黄酮(14)、3,5,3',4'-四羟基-7-甲氧基黄酮(15)、5-羟基-3,7,4'-三甲氧基黄酮(16)、3,5-二羟基-7,4'-二甲氧基黄酮(17)、木犀草素(18)、3-甲氧基槲皮素(19)、7,3',4'-三甲氧基槲皮素(20)、10-二十碳烯酸(21)、13-十八碳烯酸乙酯(22)、二十二烷酸(23)、天师酸(24)、9(S),12(S),13(S)-三羟基十八烷-10(E),15(Z)-二烯酸(25)。结论 化合物1和2为新的齐墩果烷型五环三萜化合物,分别命名为30β-羟基阿江榄仁素和29α-羟基阿江榄仁素。化合物1、2、7、8、19、24、25为首次从刺蕊草属植物中分离得到。
[Key word]
[Abstract]
Objective To study the non-volatile chemical constituents from Guanghuoxiang (Pogostemon cablin (Blanco) Benth). Methods The chemical constituents were isolated and purified by various chromatographic techniques such as silica gel, DM130 macroporous resin, ODS, Sephadex LH-20, TLC, semi-preparative HPLC and their structures were identified based on physicochemical properties, MS, 1D NMR and 2D NMR spectral data. Results Twenty-five compounds were isolated from the 95% ethanol extract of P. cablin, which were identified as 2α,3β,19α,23α,30β-pentahydroxyolean-12-en-28 oic acid (1), 2α,3β,19α,23α,29α-pentahydroxyolean-12-en-28 oic acid (2), oleanolic acid (3), friedelin (4), β-sitosterol (5), stigmasterol (6), stigmast-4-ene-3,6-dione (7), 6-hydroxystigmast-4-en-3-one (8), 6-hydroxystigmasta-4,22-dien-3-one (9), 5-hydroxy-7,3',4'-trimethoxyflavanone (10), 5,4'-dihydroxy-7,3'-dimethoxyflavanone (11), 5-hydroxy-7,4'-dimethoxyflavanone (12), eriodictyol (13), 3,3',4',7-tetramethoxy-5-hydroxyflavone (14), 3,5,3',4'-tetrahydroxy-7-methoxyflavone (15), 5-hydroxy-3,7,4'-trimethoxyflavone (16), 3,5-dihydroxy-7,4'-dimethoxyflavone (17), luteolin (18), 3-O-methylquercetin (19), 7,3',4'-trimethylquercetin (20), 10-eicosenoic acid (21), 13-octadecenoic acid ethyl ester (22), behenic acid (23), tianshic acid (24), and 9(S),12(S),13(S)- trihydroxyoctadeca-10(E),15(Z)-dienoic acid (25). Conclusion Compounds 1 and 2 are new oleanane type pentacyclic triterpenes named 30β-hydroxyarjungenin and 29α-hydroxyarjungenin respectively. Compounds 1-2, 7-8, 19, and 24-25 are isolated from Pogostemon genus for the first time.
[中图分类号]
R284.1
[基金项目]
国家自然科学基金项目(81973458);国家自然科学基金项目(81673570);上海科技创新行动计划(18401931100)