[关键词]
[摘要]
目的 研究木豆Cajanus cajan叶的化学成分。方法 通过正相硅胶色谱、中压反相硅胶色谱(ODS)、反相大孔树脂(MCI)、Sephadex LH-20凝胶等多种技术进行分离纯化,并通过核磁共振谱、质谱等波谱数据鉴定其结构。结果 从木豆叶醇提物中分离得到23个化合物,分别鉴定为木豆素(1)、木豆素A(2)、木豆素C(3)、木豆内酯A(4)、球松素(5)、荭草苷(6)、异牡荆苷(7)、牡荆苷(8)、cajanol(9)、cajanin(10)、樱黄素(11)、红车轴草素(12)、(2R, 3R)-2, 3-二氢-5-7, 4′-二甲氧基黄酮(13)、10′, 16′-二羟基棕榈酸乙酯(14)、香草酸(15)、十七烷酸乙酯(16)、2-O-甲基肌醇(17)、2, 3, 4-三羟基异戊酸(18)、豆甾醇(19)、桦木酸(20)、十七烷酸(21)、β-谷甾醇(22)和β-胡萝卜苷(23)。结论 化合物10~19均为首次从该属植物中分离得到。
[Key word]
[Abstract]
Objective To study the chemical compounds from the leaves of Cajanus cajan. Methods Normal phase silica gel, medium-pressure ODS, MCI, and Sephadex LH-20 gel column chromatographies were used to isolate and purify the constituents. And their structures were identified by their physical properties, nuclear magnetic resonance spectrum, mass spectrometry, etc. Results Twenty-three compounds were separated from the alcohol extract in the leaves of C. cajan. They were cajanine (1), longistyline A (2), longistyline C (3), cajanolactone A (4), pinostrobin (5), orientin (6), isovitexin (7), vitexin (8), cajanol (9), cajanin (10), prunetin (11), pratensein (12), (2R, 3R)-2, 3-dihydro-5-7, 4′-dimethoxyflavone (13), ethyl 10′, 16′-dihydroxy hexadecanoate (14), vanillic acid (15), ethyl heptadecanoate (16), 2-O-quebrachitol (17), 2, 3, 4-trihydroxy-isovaleric acid (18), stigmasterol (19), betulinic acid (20), heptadecanoic acid (21), β-sitosterol (22), and β-daucosterol (23). Conclusion Compounds 10—19 are obtained from this plant for the first time.
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[基金项目]
面向新药发现的数字化中药化学成分库(2011ZX09307-002-01)