Triterpene glycosides ofAstragalus and their genins. IX. Askendoside D fromAstragalus taschkendicus

A new glycoside of the cycloartane series — askendoside D — has been isolated from the roots of the plantsAstragalus taschkendicus Bge., and on the basis of chemical transformations and spectral characteristics its structure has been established as 20S, 24R-epoxycycloartane-3, 6, 16, 25-tetraol 3-0-0--L-arabinopyranosyl-(1 2)--D-xylopyranoside] 6-0--D-xylopyranoside.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 180–185, March–April, 1983.