Four New Steroid Constituents from the Waste Residue of Fibre Separation from Agave americana Leaves
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概要
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Three new steroidal saponins, named agamenosides H-J (1-3), and a new cholestane steroid agavegenin D (4) were isolated from the waste residue of fibre separation from Agave americana leaves, together with six known steroids. Structures of the new compounds 1-4 were deduced to be (22S, 23S, 24R, 25S)-24-[β-D-glucopyranosyl) oxy]-5α-spirostane-3β, 6α, 23-triol 6-0-β-D-glucopyranoside (1), (22S, 23S, 24R, 25S)-5α-spirostane-3β, 23, 24-triol 24-0-β-D-glucopyranoside (2), (22S, 23S, 25R, 26S)-23, 26-epoxy-5α-furostane-3β, 22, 26-triol 26-0-β-D-glucopyranoside (3), and (22S, 25S)-5α-cholestane-3β, 16β, 22, 26-tetrol (4), respectively, by means of spectroscopic analysis, including extensive 1D and 2D NMR data, and the results of hydrolytic cleavage.
- 公益社団法人日本薬学会の論文
- 2004-06-01
著者
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YANG Chong-Ren
State Key Laboratory of Phytochemistry Plant Resources in West China, Kunming Institute of Botany, C
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Zhang Ying-jun
State Key Laboratory Of Phytochemistry And Plant Resources In West China Kunming Institute Of Botany
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Yang Chong-ren
State Key Laboratory Of Phytochemistry And Plant Resources In West China Kunming Institute Of Botany
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Jin Jian-ming
State Key Laboratory Of Phytochemistry And Plant Resources In West China Kunming Institute Of Botany
関連論文
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- Four New Steroid Constituents from the Waste Residue of Fibre Separation from Agave americana Leaves