论文部分内容阅读
红厚壳属植物 C.caledonicum Vierll.心材具有抗真菌和抑制白蚁作用。作者从该植物茎皮的乙酸乙酯提取物中分离并鉴定了2种新的咕吨酮,拟名为 caledonixanthone E(1)和F(2),并评价了这2个化合物及从该植物二氯甲烷部位和乙酸乙酯部位中分得的其他已知多酚类的抗真菌活性。该植物茎皮干燥粉碎后依次用己烷、二氯甲烷、乙酸乙酯和甲醇提取。乙酸乙酯部位用硅胶柱层析,用二氯甲烷-乙酸乙酯梯度洗脱,得45个部位。这些部位经进一步层析得化合物1和2及一些已知成分。化合物1为
C. caledonicum Vierll. Heartwood has anti-fungal and termite-inhibiting effects. The authors isolated and identified two new xanthones from the ethyl acetate extract of the bark of the plant, which were named caledonixanthone E(1) and F(2), and evaluated the two compounds and from the plant. Antifungal activity of other known polyphenols obtained in the dichloromethane and ethyl acetate fractions. The plant bark was dried and crushed and then extracted with hexane, methylene chloride, ethyl acetate and methanol in that order. The ethyl acetate fraction was chromatographed on a silica gel column eluting with a gradient of dichloromethane to ethyl acetate to give 45 fractions. These fractions were further chromatographed to give compounds 1 and 2 and some known ingredients. Compound 1 is