New steroidal saponins of Agave americana |
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Authors: | Boguslaw Wilkomirski Valentin A Bobeyko Pavel K Kintia |
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Institution: | The Institute of Chemistry of the Academy of Sciences of the Moldavian SSR, Kishinev 277028, U.S.S.R. |
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Abstract: | Two new saponins, agavasaponin E and agavasaponin H have been isolated from the methanolic extract of Agave americana leaves and their structures elucidated. Agavasaponin E is 3-O-β-d-xylopyranosyl-(1→2glc1)-α-l-rhamnopyranosyl-(1→4)-α-l-rhamnopyranosyl-(1→3glc 1)-β-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→4)-α-d-galactopyranosyl]-(25R)-5α-spirostan-12-on-3β-ol, whereas agavasaponin H is 3-O-β-d-xylopyranosyl-(1→2 glc 1)-α-l-rhamnopyranosyl-(1→4)-α-l-rhamnopyranosyl-(1→3 glc 1)-β-d-glucopyranosyl-(1→4)-β-d-glucopyranosyl-(1→4)-β-d-galactopyranosyl]-26-O-β-d-glucopyranosyl]-(25R)-5α-furostan-12-on-3β,22α,26-triol. |
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Keywords: | Amaryllidaceae furostanol glycosides spirostanol glycosides |
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