A new triterpenoid saponin was isolated from Lonicera fulvotomentosa.The structure of the new tri-terpenoid saponin,named Fulvotomentoside B,was elucidated as 3-O-β-D-xylopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α...A new triterpenoid saponin was isolated from Lonicera fulvotomentosa.The structure of the new tri-terpenoid saponin,named Fulvotomentoside B,was elucidated as 3-O-β-D-xylopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl hederagenin-28-O-β-D-xylopyranosyl(1→6)-β-D-glucopyranosyl ester on the basis of spectroscopic analysis as well as chemical methods.In addition,the structure of Fulvotomentoside A,the previously reported major saponin,was revised,and it should be 3-O-β-D-xylopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl hederagenin-28-O-β-D-glucopyranosy(1→6)-β-D-glucopyranosyl ester(Decaisoside E) on the basis of careful analyses of new spectroscopical data.展开更多
目的:采用薄层扫描法测定金银花中黄褐毛忍冬皂苷甲的含量。方法:硅胶 G 薄层板,展开剂:氯仿-甲醇-水(61∶32∶5),显色:10%硫酸乙醇溶液喷雾,105℃烘烤约5min,双波长锯齿扫描,检测波长518nm,参比波长700nm。结果:黄褐毛忍冬皂苷甲的线...目的:采用薄层扫描法测定金银花中黄褐毛忍冬皂苷甲的含量。方法:硅胶 G 薄层板,展开剂:氯仿-甲醇-水(61∶32∶5),显色:10%硫酸乙醇溶液喷雾,105℃烘烤约5min,双波长锯齿扫描,检测波长518nm,参比波长700nm。结果:黄褐毛忍冬皂苷甲的线性范围为1.20～7.20μg,r=0.998。平均回收率为99.76%,RSD 为2.45%。结论:用于金银花中皂苷类成分的分析,本法简便、快速,重现性好。展开更多
文摘A new triterpenoid saponin was isolated from Lonicera fulvotomentosa.The structure of the new tri-terpenoid saponin,named Fulvotomentoside B,was elucidated as 3-O-β-D-xylopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl hederagenin-28-O-β-D-xylopyranosyl(1→6)-β-D-glucopyranosyl ester on the basis of spectroscopic analysis as well as chemical methods.In addition,the structure of Fulvotomentoside A,the previously reported major saponin,was revised,and it should be 3-O-β-D-xylopyranosyl(1→3)-α-L-rhamnopyranosyl(1→2)-α-L-arabinopyranosyl hederagenin-28-O-β-D-glucopyranosy(1→6)-β-D-glucopyranosyl ester(Decaisoside E) on the basis of careful analyses of new spectroscopical data.
文摘目的:采用薄层扫描法测定金银花中黄褐毛忍冬皂苷甲的含量。方法:硅胶 G 薄层板,展开剂:氯仿-甲醇-水(61∶32∶5),显色:10%硫酸乙醇溶液喷雾,105℃烘烤约5min,双波长锯齿扫描,检测波长518nm,参比波长700nm。结果:黄褐毛忍冬皂苷甲的线性范围为1.20～7.20μg,r=0.998。平均回收率为99.76%,RSD 为2.45%。结论:用于金银花中皂苷类成分的分析,本法简便、快速,重现性好。
