12,15-Dimethyl-8-oxa-tetra-cyclo-[8.8.0.02,7.011,16]octa-deca-1(18),2,4,6,11(16),12,14-heptaen-10-ol.

ABSTRACT

In the title compound, C19H18O2, the pyran ring is in a half-chair conformation. The fused ring system comprising the benzene and cyclo-hexene rings is essentially planar (r.m.s. deviation = 0.053 Å) and forms a dihedral angle of 27.95 (6)° with the other benzene ring. In the crystal, O-H⋯O hydrogen bonds connect the mol-ecules into chains propagating along [001].