- TRITERPENE GLYCOSIDES OF Astragalus AND THEIR GENINS. XXXVII. CYCLOARALOSIDE F FROM Astragalus amarus AND Astragalus villosissimus
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The glycosides of the plant Astragalus villosissimus Bunge have been studied.Four glycosides have been isolated from the roots of this plant, and two of them have been identified as β-sitosterol β-D-glucopyranoside and cycloaraloside C.The most polar glycoside, which has also been isolated from the roots of Astragalus amarus Pall., proved to be a new triterpene glycoside of the cycloartane series and has been called cycloaraloside F.It is a trioside of cyclosieversigenin containing two molecules of D-glucose and one molecule of D-apiose.On the basis of chemical transformations and spectral characteristics, the structure of cycloaraloside F has been established as 20R,24S-epoxycycloartane-3β,6α,16β,25-tetraol 3-O-2)-β-D-glucopyranoside> 25-O-β-D-glucopyranoside.
- Isaev, M. I.,Imomnazarov, B. A.
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- TRITERPENE GLYCOSIDES OF Astragalus AND THEIR GENINS XXXIX. CYCLOARALOSIDE D FROM Astragalus amarus
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The structure of a triterpene glycoside of the cycloartane series - cycloaraloside D. isolated from the roots of Astragalus amarus Pall. (Leguminosae) - has been established on the basis of chemical transformations and spectral characteristics.Cycloaraloside D is 20R,24S-epoxycycloartane-3β,6α,16β,25-tetraol 3-O-2)-β-D-glucopyranoside>.
- Isaev, M. I.
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p. 457 - 459
(2007/10/02)
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- TRITERPENE GLYCOSIDE OF Astragalus AND THEIR GENINS XXXIV. CYCLOARALOSIDE E FROM Astragalus amarus
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Five compounds of glycosidic nature, designated 5-9 have been isolated from the roots of the plant Astragalus amarus Pall. (Leguminosae).The structure of substance 8, which has been called cycloaraloside E, has been shown on the basis of chemical transformations and spectral characteristics.Cycloaraloside E is 20R,24S-epoxycycloartane-3β,6α,16β,25-tetraol 3,25-di-O-β-D-glucopyranoside.
- Isaev, M. I.,Abubakirov, N. K.
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p. 559 - 561
(2007/10/02)
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