Buy article online - an online subscription or single-article purchase is required to access this article.
organic compounds
Although the title compound, C43H58O17.0.355C4H8O2, from Entandrophragma cylindricum, exhibits significant disorder in its ester side chains, it was possible to determine the absolute configurations of the (2S)-2-methylbutanoate and (2S)-2-hydroxy-2-methylbutanoate sidechain groups by comparison with the stereochemistry of the core secotetranortriterpenoid skeleton.