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Rhoiptelenol, (2), isolated from Ficus thunbergii Maxim. (Moraceae), has been reported as a triterpenoid component. The title compound, (1), whose molecular formula was shown by its high-resolution mass spectrum to be C32H52O2, was obtained from (2) by acetylation with Ac2O and pyridine. The structure of (1) was proved by NMR spectroscopy to be one of a rearranged ursane-type triterpenoid with five six-membered rings. We have described the conformation and geometry of (1) by an X-ray crystallographic analysis and molecular-mechanics calculations.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks text, ka1168a

CCDC reference: 127099

-1
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