Two new triterpene rhamnosides from Euphorbia dracunculoides Lam.
Two new triterpene rhamnosides from Euphorbia dracunculoides Lam.
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DOI：
10.1016/j.phytol.2015.03.015
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发表时间：
2015-06
影响因子：
1.7
通讯作者：
Li Wang;Li Wang;P. Cao;Zhen Zang;Ya-Tuan Ma;Feng Liu;Fei Li;Xianghua Wu;Sheng-Xiong Huang;Yong Zhao
中科院分区：
文献类型：
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作者：
Li Wang;Li Wang;P. Cao;Zhen Zang;Ya-Tuan Ma;Feng Liu;Fei Li;Xianghua Wu;Sheng-Xiong Huang;Yong Zhao
从黄连地上部分70%丙酮水提物的石油醚提取物中分离得到两个新的三萜鼠李糖苷：3β-O-[α-l-(2′，3′，4′-O-triacetyl)-rhamnopyranosyl]-aleuritolic酸(1)和3β-O-[α-l-(2′，3′-O-diacetyl)-rhamnopyranosyl]-aleuritolic酸(2)，以及4个已知的三萜类化合物(3-6)。龙舌兰。通过广泛的波谱分析和酸解，并与文献报道的数据比较，确定了它们的结构。其中，化合物1和2为蒲公英类三萜鼠李糖苷的首次报道，化合物3-6为首次从该植物中分离得到。
Two new triterpene rhamnosides, 3β-O-[α-l-(2′,3′,4′-O-triacetyl)-rhamnopyranosyl]-aleuritolic acid (1), and 3β-O-[α-l-(2′,3′-O-diacetyl)-rhamnopyranosyl]-aleuritolic acid (2), together with four known triterpenoids (3–6) were isolated from the petroleum ether fraction of the 70% aqueous acetone extract of the aerial parts ofE. dracunculoidesLam. Their structures were elucidated by means of extensive spectroscopic analysis, acid hydrolysis, and comparison with data reported in the literatures. Among them, compounds1and2are the first examples of taraxerene-type triterpene rhamnosides, and compounds3–6were isolated from this plant for the first time.