采用硅胶吸附柱色谱的手段 ,从南葶苈子中分离得到一个化合物 ,利用理化和谱学 (NMR ,ESI MS)分析的方法 ,确定其结构为槲皮素 7 O β D 吡喃葡萄糖基 (1→ 6) β D 吡喃葡萄糖苷(quercetin 7 O β D glucopyranosyl(1→ 6) β D gluc...采用硅胶吸附柱色谱的手段 ,从南葶苈子中分离得到一个化合物 ,利用理化和谱学 (NMR ,ESI MS)分析的方法 ,确定其结构为槲皮素 7 O β D 吡喃葡萄糖基 (1→ 6) β D 吡喃葡萄糖苷(quercetin 7 O β D glucopyranosyl(1→ 6) β D glucopyranoside) ,该化合物的结构未见文献报道 ,为新化合物。展开更多
Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids o...Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids of NMR and MS spectral analysis. Result Three newcompounds, together with 14 known compounds, were isolated form the 80% ethanolic extract of itsstems. Conclusion The three new compounds, opuntioside Ⅰ (2), 4-ethoxyl-6-hydroxymethyl-α-pyrone(3) and kaempferol 7-O-β-D-glucopyranosyl (1→4)-β-D-glucopyranoside (4), were characterized.展开更多
文摘采用硅胶吸附柱色谱的手段 ,从南葶苈子中分离得到一个化合物 ,利用理化和谱学 (NMR ,ESI MS)分析的方法 ,确定其结构为槲皮素 7 O β D 吡喃葡萄糖基 (1→ 6) β D 吡喃葡萄糖苷(quercetin 7 O β D glucopyranosyl(1→ 6) β D glucopyranoside) ,该化合物的结构未见文献报道 ,为新化合物。
文摘Aim To study the chemical composition of Opuntia dillenii Haw. Methods Manykinds of chromatogra-phy methods were used in the isolation procedure, while the structures ofisolated compounds were determined on the aids of NMR and MS spectral analysis. Result Three newcompounds, together with 14 known compounds, were isolated form the 80% ethanolic extract of itsstems. Conclusion The three new compounds, opuntioside Ⅰ (2), 4-ethoxyl-6-hydroxymethyl-α-pyrone(3) and kaempferol 7-O-β-D-glucopyranosyl (1→4)-β-D-glucopyranoside (4), were characterized.