Two new lanostane triterpenoids from the branches and leaves of Polyalthia oblique.

Two new lanostane triterpenoids from the branches and leaves of Polyalthia oblique.
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斜花枝叶中两个新的羊毛甾烷三萜类化合物

DOI:
10.3390/molecules19067621
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发表时间:
2014-06-06
期刊:
Molecules (Basel, Switzerland)
影响因子:
--
通讯作者:
Song XP
Song XP
中科院分区:
其他
文献类型:
--
作者:
Wang LK;Zheng CJ;Li XB;Chen GY;Han CR;Chen WH;Song XP

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从斜杜鹃枝叶乙醇提取物中分离得到了2个新的毛甾烷类三萜,20-羟基胡芦酚-7-one(1)和15α-羟基胡芦酚-7,11-dione(2),以及4个已知的三萜:大戟酚-7-one(3)、叶黄素(4)、柱头甾-4-烯-6α-醇-3-one(5)、柱头甾-4-烯-3,6-dione(6)。在广泛的光谱分析和与相关已知化合物比较的基础上,对1和2的结构进行了阐明。测试了两种新化合物和四种已知化合物的抑菌活性。
Two new lanostane triterpenoids, 20-hydroxyeuphorbol-7-one (1) and 15α-hydroxyeuphorbol-7,11-dione (2), together with four known triterpenoids, euphorbol-7-one (3), friedelin (4), stigmast-4-ene-6α-ol-3-one (5), stigmasta-4-en-3,6-dione (6), were isolated from ethanol extract of the branches and leaves of Polyalthia obliqua. The structures of 1 and 2 were elucidated on the basis of extensive spectroscopic analysis and comparisons with related known compounds. Antibacterial activities of two new compounds and four known compounds were tested.
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