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Steroid saponins and sapogenins ofAllium. XV. Eruboside B fromAllium erubescens

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Abstract

A new steroid glycoside of the spirostan series — eruboside B (I) — has been isolated from an ethanolic extract of the bulbs ofAllium erubescens C. Koh. In an acid hydrolysate, the aglycone β-chlorogenin (II) and the sugars D-glucose and D-galactose in a ratio of 3:1 have been found. By methylation, partial hydrolysis, and oxidation the structure of the spirostanol (I) has been established as (25R)-5α-spirostan-3β,6β-diol 3-O-{[O-β-D-glucopyranosyl-(1→3)]-[O-β-D-glucopyranosyl-(1→2)]-O-β-D-glucopyranosyl-(1→4)-β-D-galactopyranoside}.

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Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Tbilisi State Medical Institute. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 509–514, July–August, 1979.

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Chincharadze, D.G., Kel'ginbaev, A.N., Gorovits, M.B. et al. Steroid saponins and sapogenins ofAllium. XV. Eruboside B fromAllium erubescens . Chem Nat Compd 15, 442–446 (1979). https://doi.org/10.1007/BF00565042

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  • DOI: https://doi.org/10.1007/BF00565042

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