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目的:研究青龙衣的化学成分。方法:采用AB-8大孔吸附树脂、反复硅胶柱色谱、Sephadex LH-20以及重结晶等方法进行分离纯化,根据理化性质及NMR光谱数据进行结构鉴定。结果:从青龙衣中分离并鉴定了12个化合物,分别鉴定为:3-甲氧基胡桃醌(1)、3-乙氧基胡桃醌(2)、1,8-二羟基蒽醌(3)、胡桃醌(4)、2α,3α,19α-三羟基熊果酸(5)、1α,3β-二羟基-齐墩果烷-18-烯(6)、没食子酸甲酯(7)、枫杨素(8)、槲皮素(9)、山柰酚(10)、胡萝卜苷(11)、β-谷甾醇(12)。结论:其中,化合物1~3、6为首次从青龙衣中分离得到,化合物5、7为首次从该属植物中分离得到。
Objective: To study the chemical composition of Qinglongyi. METHODS: The compounds were isolated and purified by AB-8 macroporous adsorption resin, repeated silica gel column chromatography, Sephadex LH-20 and recrystallization. The structures were elucidated on the basis of physico-chemical properties and NMR spectral data. Results: Twelve compounds were isolated and identified from Qinglongyi and identified as 3-methoxyjuglone (1), 3-ethoxyjuglone (2), 1,8-dihydroxyanthraquinone (4), 2α, 3α, 19α-trihydroxy ursolic acid (5), 1α, 3β-dihydroxy-oleanane-18-ene (6), methyl gallate (8), quercetin (9), kaempferol (10), daucosterol (11) and β-sitosterol (12). Conclusion: Among them, compounds 1 ~ 3,6 were isolated from Qinglongyi for the first time, and compounds 5 and 7 were isolated from this genus for the first time.