Abstract
Norrish (type II) photochemical fragmentation of 25,26,27-trinor-17,14-frido-9β-lanostane 23-ketone was performed to give the 17α-vinyl derivative, a promising intermediate for the synthesis of 4,4-dimethyl-9β-steroid derivatives.
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For Part 23, see Ref. 1.
Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 7, pp. 1401–1402.
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Grishko, V.V., Shakirov, M.M. & Raldugin, V.A. Triterpenoids fromAbies species. Russ Chem Bull 48, 1387–1389 (1999). https://doi.org/10.1007/BF02495313
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DOI: https://doi.org/10.1007/BF02495313