摘要
从有毒植物小花棘豆(Oxytropis glabra DC.)的地上部分分离得到10种化合物,经光谱分析及理化常数测定,分别鉴定为槲皮素(Ⅰ)、山奈酚(Ⅱ)、3′,7-二羟基-2′,4′-二甲氧基-异黄烷(Ⅲ)、山奈-7-O-α-L-鼠李吡喃糖甙(Ⅳ)、山奈酚-3-O-β-D-葡萄吡喃糖甙(Ⅴ)、山奈酚--O-β-D-葡萄吡喃糖(1→2)-β-D-葡萄吡喃糖甙(Ⅵ)、山奈酚-3-O-β-D-葡萄吡喃糖-7-O-β-D-葡萄吡喃糖甙(Ⅶ)槲皮素-3-O-β-D-葡萄吡喃糖甙(Ⅷ)、杨梅树皮甙(Ⅺ)和3-O-[α-L-鼠李吡喃糖基(1→3)-β-D-葡萄吡喃糖基(1→6)-β-D-葡萄吡喃糖醛酸基]-黄豆醇B(Ⅹ)。上述成分均为首次从该植物中分得。化合物Ⅹ为新化合物。
Oxytropis glabra DC.has been characterized as one of the most destructive plants to livestock in the northwest of China.In the course of studing the toxic principles of this plant,ten compounds were isolated and identified from the abo- vegronud parts of Oxytropis glabra DC.by spectra analysis and other physical-chem- ical means.They have been identified as quercetin(Ⅰ),kaempferol(Ⅱ),3′,7-dihydro- xy-2′,4′-dimethoxy-iso-flavane(Ⅲ),kaempferol-7-O-a-L-rhamnopyranoside(Ⅳ),ka empferol-3-O-β-D-glucopyranoside(Ⅴ),kaempferol-3-O-β-D-glucopyranosyl(l-2)-β- D-glucopyranoside(Ⅵ),kaempferol-3-O-β-D-glucopyranosyl-7-O-β-D-glucopyrano- side(Ⅶ),querce(?)n-3-O-β-D-glucopyranoside(Ⅷ),myricetin-3-O-β-D-gluco- pyranoside(Ⅸ) and 3-O-[α-L-rhamnopyranosyl(l-3)-β-D-glucopyranosyl(1-6)-β- D-glucuropyranosyl]-soyasapogenol B(Ⅹ) respectively.All of them were isolated from this plant for the first time.No.X is a new triterpenoid saponin.
关键词
豆科
小花棘豆
化学成分
Leguminosae
Oxytropis glabra
Flavonolds
Triterpenoid saponin
