A Synthesis of (-)-12,15-Epoxylabda-8(17),12,14-trien-16-yl Acetate and (-)-Pumiloxide

Sclareol (7) and manoyl oxide (8) have each been converted into the (-)-enantiomers of the naturally occurring diterpenoids 12,15-epoxylabda-8(17),12,14-trien-16-yl acetate (2) and pumiloxide (1).