(1S,3R,8R,9S,10R)-2,2-Dichloro-3,7,7,10-tetramethyltricyclo[6.4.0.01,3]dodecan-9-yl 4-methylbenzene-1-sulfonate

Abstract

The title compound, C23H31Cl2O3S, was synthesized in three steps from β-himachalene (3,5,5,9-tetramethyl-2,4a,5,6,7,8-hexahydro-1H-benzocycloheptene), which was isolated from essential oil of the Atlas cedar (Cedrus atlantica). The fused six- and seven-membered rings have boat conformations: the dihedral angle between the mean planes of the rings is 88.03 (12)%. The absolute structure was established unambiguously from anomalous dispersion effects. There are no directional interactions in the crystal.