Summary
1. A new lactone, isoridentin, with the composition C15H20O4, has been isolated from the epigeal part ofAchillea biebersteinii.
2. On the basis of chemical and spectral information it has been established that isoridentin has the structure of 1,3-dihydroxygermacra-4,10(14),11(13)-trien-6,12-olide.
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Literature cited
M. I. Yusupov, A. Mallabaev, and G. P. Sidyakin, Khim. Prirodn. Soedin., 396 (1976).
M. A. Irwin and T. A. Geissman, Photochemistry,12, 863 (1973).
M. A. Irwin, K. H. Lee, R. F. Simpson, and T. A. Geissman, Photochemistry,8, 2009 (1969).
Additional information
Institute of the Chemistry of Plant Substances, Academy of Sciences of the Uzbek SSR, Tashkent. Translated from Khimiya Prirodnykh Soedinenii, No. 6, pp. 800–802, November–December, 1977.
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Yusupov, M.I., Kasymov, S.Z., Abdullaev, N.D. et al. A new lactone, isoridentin, fromAchillea biebersteinii . Chem Nat Compd 13, 674–676 (1977). https://doi.org/10.1007/BF00565516
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DOI: https://doi.org/10.1007/BF00565516