龙眼叶的化学成分研究

Chemical Constituents from the Leaves of Dimocarpus longan

目的:研究龙眼叶的化学成分。方法:通过反复硅胶柱层析分离纯化、重结晶,根据理化性质及波谱数据分析鉴定化合物结构。结果:从龙眼叶的石油醚和乙酸乙酯部位分离得到了11个化合物,分别鉴定为:正二十八烷醇(1)、羽扇豆醇(2)、二十八烷酸(3)、三十烷酸(4)、β-谷甾醇(5)、胡萝卜苷(6)、没食子酸乙酯(7)、山柰酚(8)、木犀草素(9)、槲皮素(10)、紫云英苷(11)。结论:其中,化合物1~4、7~11为首次从该植物中分离得到。

Objective ：To study the chemical constituents from the leaves of Dimocarpus longan. Methods：The constituents were i- solated and purified by silica gel column chromatography, also were recrystalfized by different solvents. Their structures were identified by physiochemieal property and spectral data analysis. Results：Eleven compounds were isolated from petroleum ether extracts and ethyl acetate extracts from the leaves of Dimocarpus longan, and identified as 1-octacosanol （ 1 ）, lupeol （2）, octacosanic acid （3）, triacontanoic acid （4） ,β-sitosterol （ 5 ）, daucosterol （ 6 ）, ethyl gallate （ 7 ）, kaempferol （ 8 ）, luteolin （ 9 ）, quercetin （10） and astragallin ranoside （ 11 ）. Conclusion ： Compounds 1 - 4,7 - 11 are isolated from this plant for the first time.