(1R,6S,7R,8S)-3,3-dimethyl-2,4-dioxa-7-(2-propenyl)bicyclo[4.3.0]nonan-8-ol

(2R,3S)-5-tert-butyldimethylsilyloxy-2,3-epoxypentan-1-ol

2-{(1R,6S)-6-[(1E)-1,3-butadienyl]-3,3-dimethyl-2,4-dioxacyclohexyl}ethanol

(4R,5S)-4-(2-tert-butyldimethylsilyloxyethyl)-2,2-dimethyl-1,3-dioxa-5-ethenylcyclohexane

(4R,5S)-4-{5-[(1E)-1,3-butadienyl]}-4-(2-tert-butyldimethylsilyloxyethyl)-2,2-dimethyl-1,3-dioxa-cyclohexane