Abstract: | A new ecdysteroid—integristerone A 25-acetate—has been isolated from the roots ofSilene brahuica Boiss. Its structure has been determined on the basis of chemical transformations and spectral characteristics.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Republic of Uzbekistan, Tashkent, fax (3712) 40 64 75. Translated from Khimiya Prirodnykh Soedinenii, No 4, pp. 492–493, July–August, 1999. |