6α,7β-Dihydroxyvouacapan-17β-oic Acid

The title compound, 1,5,5a,6,7,7a,8,9,10,11,11a,11b-dodecahydro-6,7-dihydroxy-8,8,11a- trimethylphenanthro[3,2-b]furan-5-carboxylic acid, C₂₀H₂₈O₅, presents both anti-inflammatory and analgesic activities. Two of the six-membered rings adopt chair conformations, whereas the ring fused to furan is in a half-chair conformation. Crystal packing is established by three intermolecular hydrogen bonds.

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