作者:Guo-Cai Wang、Guo-Qiang Li、Hua-Wei Geng、Tao Li、Jiao-Jiao Xu、Fang Ma、Xia Wu、Wen-Cai Ye、Yao-Lan Li
DOI:10.1016/j.phytochem.2013.07.014
日期:2013.12
Ten eudesmane-type sesquiterpene derivatives (1-10), including six cuauhtemone derivatives (1-6), one di-norsesquiterpene (3-oxo-di-nor-eudesma-4-en-11-oic acid, 7), and three eudesmane glycosides (alatoside F-H, 8-10) were isolated from the whole plants of Laggera alata together with 12 known compounds. Their structures were elucidated on the basis of extensive spectroscopic analysis, acid hydrolysis
10 种eudesmane 型倍半萜衍生物 (1-10),包括 6 种 cuauhtemone 衍生物 (1-6)、1 种二去甲倍半萜 (3-oxo-di-nor-eudesma-4-en-11-oic acid, 7),和三种eudesmane 苷(alatoside FH,8-10)与12 种已知化合物一起从Laggera alata 的全株中分离出来。在广泛的光谱分析和酸水解的基础上阐明了它们的结构,并通过单晶 X 射线衍射分析研究了化合物 1 和 7。1 的绝对构型是通过应用修改后的 Mosher 方法确定的。评估了所有分离的eudesmane 型倍半萜烯对六种人类癌细胞系的细胞毒活性,但所有化合物在浓度为 100 μg/mL 的测试细胞系中均无活性。