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从半卧狗娃花(Heteropappus semiprost Griers)全草的乙醇提取物中分离并鉴定了7个黄酮类化合物,通过波谱分析及化学方法鉴定其结构为:3′,4′,5,7-四羟基黄酮(1),3′-甲氧基槲皮素(2),槲皮素-3-O-α-L-吡喃鼠李糖甙(3),槲皮素-3-O-β-D-吡喃半乳糖甙(4),异鼠李亭-3-O-β-D-吡喃半乳糖甙(5),槲皮素-3-O-α-L-吡喃鼠李糖(1→6)-β-D-吡喃葡萄糖甙(6),异鼠李亭-3-O-α-L-吡喃鼠李糖(1→6)-β-D-吡喃葡萄糖甙(7),其中化合物1~5为首次从本属植物中分离得到。
Seven flavonoids were isolated and identified from the ethanol extract of Heteropappus semiprost Griers. Their structures were identified by spectral analysis and chemical methods: 3′, 4′, 5, 7-tetra. Hydroxyflavonoids (1), 3’-methoxyquercetin (2), quercetin-3-O-α-L-pyrhampyritol (3), quercetin-3-O-β -D-galactopyranoside (4), isostatin-3-O-β-D-galactopyranoside (5), quercetin-3-O-α-L-pyrrolidine Sugar (1→6)-β-D-Glucopyranoside (6), Isorhamnetin-3-O-α-L-rhampyramiose (1→6)-β-D-glucopyranose甙(7), Compounds 1~5 are isolated from this genus for the first time.