Determination of the absolute configuration of the asymmetric center at C11 in the eudesmanolides

It has been shown that it is possible to use the method of circular dichroism to determine the absolute configuration of the asymmetric center at C₁₁ in the eudesmanolides. The orientations of the hydroxy group at C₁ and of the methyl group at C₄ in arabsin have been established.Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 3, pp. 343–346, May–June, 1980.