Two new pentacyclic triterpenoids from the stems of Manihot esculenta

Two new pentacyclic triterpenoids from the stems of Manihot esculenta
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木薯茎中两个新的五环三萜类化合物

DOI:
10.1016/j.phytol.2015.04.018
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发表时间:
2015-06
影响因子:
1.7
通讯作者:
Hong-Ping He
Hong-Ping He
中科院分区:
生物学4区
文献类型:
--
作者:
Xiao Ding;Yu Zhang;Xiao-Jiang Hao;Hong-Ping He

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摘要近年来,我们一直致力于从大戟科植物中发现具有迷人结构特征和显著生物活性的次生代谢物。从木薯茎中分离得到两个新的五环三萜化合物,分别为Mesculentins A(1)和B(2),以及11个已知化合物。利用核磁共振波谱和质谱学等波谱技术对两个新的三萜类化合物(1-2)的结构进行了鉴定。化合物1和2为顺式转移体,对HGC-27肿瘤细胞具有中等的细胞毒活性。
AbstractsIn recent years, we have been engaged in a program to discover secondary metabolites with fascinating structural features and significant biological activities from Euphorbiaceae family. Two new pentacyclic triterpenoids, maesculentins A (1) and B (2), were isolated from the stems ofManihot esculentaCrantz,together with eleven known ones. The structures of two new triterpenoids (1–2) were elucidated by extensive spectroscopic techniques including NMR spectroscopy and mass spectrometry. Compounds1and2werecis–transisomers, which showed moderate cytotoxicity activity against HGC-27 tumour cell line.
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