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 from Heteropappus semiprost Griefs, and identified as 3',4' ,5,7-tetrahydroxyflα- vone ( 1 ) ,3 '-methoxyquercetin (2), quercetin 3 -O-α-L-rhamnopyranoside (3) , quercetin 3 -O-β-D-galactopyranoside (4), isorhamnetin 3-O-β-D-galactpyranoside ( 5), quercetin 3-O-α-L-rhamnopyranoside ( 1→6 ) -β-D-glucopyranoside ( 6 ) and isorhamnetln 3-O-α-L-rhamnopyranoside(1→6)-β-D-glucopyranoside(7) on the basis of spectral analysis and chemical methods. Among them,compounds 1-5 were obtained from this plant for the first time.