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Reduction of 2,3-Seco-28-oxo-19β,28-epoxy-18α-olean-2,3-dicarboxylic acid and its cyclic anhydride

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The synthesis of triterpenic amides on the basis of 2,3-seco-1-cyano-19β,28-epoxy-18α-oleane-3-oic acid

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Russian Journal of Bioorganic Chemistry, Vol. 36, Iss. 3, 2010-05 ,pp. : 377-382

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Allylic oxidation of 19 β ,28-epoxy-a-neo-5 β -methyl-25-nor-18 α -olean-9-ene

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Synthetic Transformations of Higher Terpenoids: XI. Synthesis of A-Nor-5bH-19b,28-epoxy-18a-olean-3-one Derivatives

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