Abstract
Four new compounds were identified in a mixture of tetracyclic methyl ketones obtained by alkaline cleavage of acids of Siberian fir needles. Two of them correspond to natural acids of the 17,13-fridolanostane series of yet unknown structure.
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For Part 19, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 12, pp. 2997–2999, December, 1996.
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Grishko, V.V., Shakirov, M.M. & Raldugin, V.A. Triterpenoids fromAbies species. Russ Chem Bull 45, 2847–2849 (1996). https://doi.org/10.1007/BF01430658
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DOI: https://doi.org/10.1007/BF01430658