A new abietane quinone diterpenoid was isolated, together with horminone, 16-acetoxy-7-O-acetylhorminone, beta-sitosterol, stigmasterol. ursolic acid and palmitic acid from the leaves of Rabdosin Serra (MAXIM) Hara. T...A new abietane quinone diterpenoid was isolated, together with horminone, 16-acetoxy-7-O-acetylhorminone, beta-sitosterol, stigmasterol. ursolic acid and palmitic acid from the leaves of Rabdosin Serra (MAXIM) Hara. The new compound was elucidated as 16-acetoxy-7 alpha-ethoxyroyleanone.展开更多
目的研究超声波法提取溪黄草中总二萜的最佳工艺。方法以冬凌草甲素为对照品,采用紫外分光光度法测定溪黄草各提取液中总二萜含量,通过单因素及正交试验考察超声波法提取溪黄草总二萜的主要影响因素,确定最佳工艺条件。结果超声波法的...目的研究超声波法提取溪黄草中总二萜的最佳工艺。方法以冬凌草甲素为对照品,采用紫外分光光度法测定溪黄草各提取液中总二萜含量,通过单因素及正交试验考察超声波法提取溪黄草总二萜的主要影响因素,确定最佳工艺条件。结果超声波法的最佳提取条件为:使用60%乙醇,在温度80℃,料液比1∶35条件下提取30 m in,连续提取2次,二萜类化合物的总提取率可达99.86%。结论超声波法提取溪黄草中总二萜的提取率高,效果好,测定方法简单可行。展开更多
文摘A new abietane quinone diterpenoid was isolated, together with horminone, 16-acetoxy-7-O-acetylhorminone, beta-sitosterol, stigmasterol. ursolic acid and palmitic acid from the leaves of Rabdosin Serra (MAXIM) Hara. The new compound was elucidated as 16-acetoxy-7 alpha-ethoxyroyleanone.
文摘目的研究超声波法提取溪黄草中总二萜的最佳工艺。方法以冬凌草甲素为对照品,采用紫外分光光度法测定溪黄草各提取液中总二萜含量,通过单因素及正交试验考察超声波法提取溪黄草总二萜的主要影响因素,确定最佳工艺条件。结果超声波法的最佳提取条件为:使用60%乙醇,在温度80℃,料液比1∶35条件下提取30 m in,连续提取2次,二萜类化合物的总提取率可达99.86%。结论超声波法提取溪黄草中总二萜的提取率高,效果好,测定方法简单可行。
