Abstract
The title compound, C32H48O5, isolated from the leaves of Miconia macrothyrsa, is a pentacyclic triterpene, in which rings A, B, D and E take a chair conformation, while ring C has a half-chair conformation. Rings A and B and rings B and C are trans-fused, while rings D and E are cis-fused. In the crystal structure, there are intermolecular O—H⋯O hydrogen bonds and intramolecular C—H⋯O hydrogen bonds.
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