An expeditious total synthesis of (±) - sempervirol, (±)-sugiol and (±)-xanthopherol methyl ether by acid-catalyzed cyclialkylation

An expeditious total synthesis of (±)-sempervirol (7) (±)-sugiol (8), and (±)-xanthopheroi methyl ether (9) by extension of a simple general route is described. The stereochemical results of the cyciialkyiation of 2-(2-p) and (2-m-isopropylphenylethyl)-l, 3,3-trime-thylcyclohexanols (le) antf (If) follow the general pattern observed earlier.