(4bS,8aS)-1-Isopropyl-4b,8,8-trimethyl-4b,5,6,7,8,8a,9,10-octa­hydro­phenan­thren-2-yl benzoate

The title compound, C(27)H(34)O(2), was hemisynthesized through direct benzoyl­ation of the naturally occurring meroterpene totarol. The central fused six-membered ring has a half-chair conformation, whereas the terminal six-membered ring displays a chair conformation. The dihedral angle between the fused benzene ring and the benzoyl benzene ring is 73.05 (14)°. The S,S chirality of the mol­ecule is consistent with the synthetic pathway, and confirmed by the refinement of the Flack parameter.