((1aR,4S,4aR,7R,7aR,7bS)-1,1,7-trimethyldecahydro-1H-cyclopropa[e]azulen-4-yl)methyl methanesulfonate

methyl (+)-(1S,7R)-8,8-dimethyl-3-oxobicyclo<5.1.0>octane-4-carboxylate

(+)-(1S,2S,4R,7R)-4-tert-butyldimethylsiloxymethyl-8,8-dimethyl-2-(2-propenyl)bicyclo<5.1.0>octan-3-one

(+)-(1R,2R,4R,7S)-7-tert-butyldimethylsiloxymethyl-3,3-dimethyltricyclo(6.3.0.02,4)undec-8-en-10-one

(+)-(1S,2S,4R,7R)-4-tert-butyldimethylsiloxymethyl-8,8-dimethyl-2-(2-oxopropyl)bicyclo[5.1.0]octan-3-one