Triterpene glycosides ofAstragalus and their genins. III. Cycloasgenin a fromAstragalus taschkendicus

The new isoprenoid cycloasgenin A has been isolated from the roots of the plantAstragalus taschkendicus C. Bge., and its structure has been established on the basis of chemical transformations and spectral characteristics as 6,11,16, 25-tetrahydroxy-20(S), 24(R)-epoxycycloartan-3-one.Institute of the Chemistry of Plant Substances of the Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 5, pp. 572–581, September–October, 1981.