Stereoselective total syntheses of (*)-sinularene and (*)-5-epi-sinularene are described. The sequence employs a "blocked" (LiAlH4), and introduction of the exocyclic double bond (acetate pyrolysis, 550°C) completes the synthesis of (2)-sinularene in 12 steps from aldehyde 7. A parallel series of reactions employing the isopropyl triene epimer 13a affords (2)-5-epi-sinularene. X-ray analyses of the triene 13a and the adduct 14a are also reported.