6-Bromo-2-(1,4-di­bromo-4-methyl­cyclo­hex­yl)-6-methyl­heptan-4-one

The title compound, C15H25Br3O, was synthesized in one step from a mixture of α-atlantone [2-methyl-6-(4-methyl­cyclo­hex-3-en-1-yl)hepta-2,5-dien-4-one] and γ-atlantone [2-methyl-6-(4-methyl­cyclo­hex-3-en-1-yl­idene)hept-2-en-4-one], which were isolated from an essential oil of the Atlas cedar (Cedrus Atlantica). The mol­ecule is built up from the bromo ethyl cyclo­hexane ring, which has a substituent bromo­methyl­hexa­none group. The cyclo­hexane ring adopts a chair conformation. In the crystal, mol­ecules are linked by C—H⋯O hydrogen bonds, forming zigzag chains parallel to [100].