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Two new triterpenoid saponins from the leaves of Ilex kudingcha

文献类型： 外文期刊

作者： Zuo, Wen-Jian 1 ; Dai, Hao-Fu 2 ; Zeng, Yan-Bo 2 ; Wang, Hui 2 ; Chen, Hui-Qin 1 ; Wang, Jin-Hui 1 ;

作者机构： 1.Shenyang Pharmaceut Univ, Sch Tradit Chinese Mat Med, Shenyang 110016, Peoples R China

2.Chinese Acad Trop Agr Sci, Inst Trop Biosci & Biotechnol, Hainan Key Lab Res & Dev Nat Prod Li Folk Med, Haikou 571101, Peoples R China

关键词： Ilex kudingcha;triterpene saponins;ilekudinchosides F and G

期刊名称：JOURNAL OF ASIAN NATURAL PRODUCTS RESEARCH （ 影响因子：1.569； 五年影响因子：1.598 ）

ISSN： 1028-6020

年卷期： 2012 年 14 卷 4 期

页码：

收录情况： SCI

摘要： Two new triterpene saponins, ilekudinchosides F (1) and G (2), along with three known saponins were isolated from the leaves of Ilex kudingcha C. J. Tseng. The new compounds were characterized as 3 beta,19 alpha-dihydroxy-12 alpha-ethoxy-urs-13(18)-ene-28,20 beta-lactone-3-O-[beta-D-glucopyranosyl(1 -> 3)]-[alpha-L-rhamnopyranosyl(1 -> 2)]-alpha-L-arabinopyranoside (1) and 3 beta,19 alpha-dihydroxy-12 alpha-methoxy-urs-13(18)-ene-28,2 beta-blactone-3-O-[alpha-L-rhamnopyranosyl(1 -> 2)]-alpha-L-arabinopyranoside (2). The new structures were elucidated by spectroscopic methods including 1D and 2D NMR, HR-TOF-MS, and CD spectrometry, and the known compounds were identified by the comparison of their NMR and HR-TOF-MS data with those reported in the literature.

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