Tocopherols and triterpenoids from Sida acuta

被引：20

作者：

Chen, Chiy-Rong

Chao, Li-Hui

Pan, Min-Hsiung

Liao, Yun-Wen

Chang, Chi-I ^{[1
]}

机构：

[1] Natl Chung Hsing Univ, Inst Mol Biol, Taichung 402, Taiwan

[2] Natl Pingtung Univ Sci & Technol, Grad Inst Biotechnol, Pingtung 912, Taiwan

[3] Natl Kaohsiung Marine Univ, Dept Seafood Sci, Bratislava 81102, Slovakia

来源：

JOURNAL OF THE CHINESE CHEMICAL SOCIETY | 2007年 / 54卷 / 01期

关键词：

Sida acuta; malvaceae; tocopherol; triterpene; 7(a)-methoxy-alpha-tocopherot; taraxast-1,20(30)-dien-3-one;

D O I：

10.1002/jccs.200700008

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

A new tocopherol derivative, 7(a)-methoxy-alpha-tocopherol (1), and a new taraxastane triterpene, taraxast-1,20(30)-dien-3-one (5), together with four known compounds, beta-tocopherol (2), alpha-tocopherol (3), alpha-tocospiro B (4) and taraxasterone (6) were isolated from the whole plant of Sida acuta. Their structures were elucidated by spectral analysis including MS, 1D and 2D-NMR spectroscopy. Among those compounds, compounds 1, 2, and 3 showed significant antioxidant effect (EC50 = 86.9, 68.2, and 70.9 mu M, respectively) in the DPPH radicals scavenging activity assay.

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收藏

页码：41 / 45

页数：5

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