Crystal structure of 3a,6,6,9a-tetramethyldodecahydronaphtho[2,1-b]furan-2-ol

The title compound (common name: sclaral), C16H28O2, is a sclareolide derivative, which was synthesized from sclareolide itself. In the molecule, the two six-membered rings, A and B, of the labdane skeleton adopt chair conformations and the five-membered O-containing heterocyclic ring C displays an envelope conformation, with the methine C atom of the fused C—C bond as the flap. In the crystal, molecules are linked by O—H...O hydrogen bonds, forming chains propagating along [100].