Many drimane and homodrimane sesquiterpenoids, including those containing nitrogen, are known to exhibit a variety of biological activities [1]. The search of new biologically active compounds prompted us to synthesize homodrimane sesquiterpenoids (4) and (6), containing benzothiazole fragment. Starting Δ8-bicyclohomofarnesoic acid (2) and Δ6,8-bicyclohomofarnesoic acid (5) were obtained from commercially available norambreinolide (1). Reaction of these acids with 2-aminothiophenole (3) produce 2-(Δ8-bicyclohomofarnesyl)-benzothiazole (4) and 2-(Δ6,8-bicyclohomofarnesyl)benzothiazole (6), accordingly. Reagents and conditions: a. Ph3P, Et3N, CCl4, Δ, 4 h. The structures of the newly obtained compounds were established on the basis of their spectral date (IR, 1H- and 13C-NMR, mass-spectra).