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目的:系统研究东方肉穗草中的黄酮类化学成分。方法:利用大孔吸附树脂、Sephadex LH-20,ODS及正相硅胶柱等色谱手段进行分离,通过多种波谱学数据分析进行黄酮类化合物的结构鉴定。结果:从醋酸乙酯部分分离得到8个黄酮类化合物,经鉴定为异鼠李素(1)、槲皮素(2)、异鼠李素-3-O-β-D-吡喃葡萄糖苷(3)、槲皮素-3-O-β-D-葡萄糖苷(4)、异鼠李素-3-D-(6″-乙酰基)-β-D-吡喃葡萄糖苷(5)、异鼠李素-3-O-(2″-乙酰基)-β-D-吡喃葡萄糖苷(6)、槲皮素-3-O- (6″-乙酰基)-β-D-吡喃葡萄糖苷(7)、槲皮素-3-O-(6″-反式-对香豆酰基)-β-D-吡喃葡萄糖苷(8)。结论:所有化合物均系首次从该属植物中分离鉴定。
Objective: To systematically study the chemical constituents of flavonoids in Commongrass. METHODS: Separation by macroporous adsorption resin, Sephadex LH-20, ODS and normal silica gel column chromatography was used to analyze the structure of flavonoids by various spectroscopic data analysis. Results: Eight flavonoids were isolated from the ethyl acetate fraction and identified as isorhamnetin (1), quercetin (2), isorhamnetin-3-O-β-D-glucopyranoside. (3) Quercetin-3-O-β-D-glucoside (4), isorhamnetin-3-D-(6′′-acetyl)-β-D-glucopyranoside (5) Isorhamnetin-3-O-(2′′-acetyl)-β-D-glucopyranoside (6), quercetin-3-O-(6′′-acetyl)-β-D- Glucopyranoside (7), quercetin-3-O-(6"-trans-p-coumaryl)-[beta]-D-glucopyranoside (8). Conclusion: All compounds were isolated and identified from this genus for the first time.