(1R,4R,5S,6S)-6-allyl-6-methyl-4-vinylbicyclo[3.2.1]octane-2,7-dione

(1R,2R,4S,5R)-4-(benzyloxy)-2-vinylbicyclo[3.2.1]octan-6-one

(1S,2R,4S,5R,7S)-7-allyl-4-hydroxy-7-methyl-2-vinylbicyclo[3.2.1]octan-6-one

(R)-methyl 3-((1S,2S)-2-allyl-2-methyl-3-oxocyclopentyl)pent-4-enoate

(1R,2R,4S,5S,6R)-4-(benzyloxy)-2-vinylbicyclo[3.2.1]octan-6-ol