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目的:研究杜仲叶中的黄酮类化学成分。方法:采用各种柱色谱方法分离纯化,通过理化常数测定和光谱分析鉴定黄酮类化合物的结构。结果:从杜仲叶中分离并鉴定了8个黄酮类化合物,分别为槲皮素(1)、芦丁(2)、金丝桃苷(3)、槲皮苷(4)、异槲皮苷(5)、quercetin-3-O-sambubioside(6)、kaempherol-3-O-sambubioside(7)、quercetin-3-O-α-L-arabinopyranosyl-(1→2)-β-D-glucopyranoside(8)。结论:化合物4和7为首次从杜仲叶中分离得到。
Objective: To study the flavonoids in Eucommia leaves. Methods: The compounds were separated and purified by various column chromatography. The structures of flavonoids were identified by physico-chemical constants and spectral analysis. Results: Eight flavonoids were isolated from Eucommia ulmoides leaves and identified as quercetin (1), rutin (2), hyperin (3), quercitrin (4), isoquercitrin Quercetin-3-O-sambubioside (6), kaempherol-3-O-sambubioside (7), quercetin-3-O-α-L-arabinopyranosyl- (1 → 2) -β-D-glucopyranoside 8). Conclusion: Compounds 4 and 7 were isolated from Eucommia leaf for the first time.