Phytoecdysteroids from the roots of Achyranthes bidentata Blume |
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| Authors: | Zhang Mei Zhou Zhong-Yu Wang Jing Cao Yong Chen Xue-Xiang Zhang Wei-Min Lin Li-Dong Tan Jian-Wen |
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| Institution: | Key Laboratory of Plant Resources Conservation and Sustainable Utilization, South China Botanical Garden, Chinese Academy of Sciences, Guangzhou 510650, China. |
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| Abstract: | Two new phytoecdysteroids, (25S)-20,22-O-(R-ethylidene)inokosterone and 20,22-O-(R-3-methoxycarbonyl)propylidene-20-hydroxyecdysone, together with six known phytoecdysteroids 3-8 were isolated from the roots of Achyranthes bidentata Blume. The new structures were established on the basis of spectroscopic studies and chemical evidences. The absolute configuration at C-25 in the structure of known compound 3 was determined by chemical and spectroscopic means. |
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