The ochtodane skeleton, the Carbon framework of 1, 1-dimethyl-3-ethylcyclohexane (1) was constructed highly stereoselectively by the acid-catalyzed (SnCl 4 or CF 3 CO 2 H) cyclization of the terminally functionalized myrcene derivatives, the benzenesulfenyl chloride adduct (7), the terminal β-hydroxy sulfide (8) derived from 7, and myrcene 6, 7-epoxide (10). The stereoselectivity of the 3-exo-double bond in 1 formed concomitantly in the cyclization ...
