The title compound, C(24)H(39)NO(2) (systematic name: 4-{[1,4a-dimethyl-7-(propan-2-yl)-1,2,3,4,4a,5,6,7,8,9,10,10a-dodeca-hydro-phenanthren-1-yl]carbon-yl}morpholine), has been synthesized from Δ(8)-dihydro-abietic acid. Two cyclo-hexene rings adopt half-chair conformations, whereas the cyclo-hexane and morpholine rings are each in the chair conformation. Two methyl groups are in an axial position with respect to the tricyclic hydro-phenanthrene nuclei.