(3aR*,4R*)-5,5-dimethyl-4-(2-tetrahydropyranyloxy)ethyl-3a,4,5,6-tetrahydro-2(3H)-pentalenone

2-acetonyl-4,4-dimethylcyclopent-2-en-1-one

(2R*,3R*)-2-acetonyl-4,4-dimethyl-3-(2-hydroxyethyl)cyclopentan-1-one

[(1R,3aR,4R,6aR)-1-(2-Hydroxy-ethyl)-2,2-dimethyl-5-oxo-4-phenylsulfanylmethyl-hexahydro-pentalen-3a-yl]-acetic acid methyl ester

(2R*,3R*)-2-acetonyl-4,4-dimethyl-3-(2-tetrahydropyranyloxy)ethylcyclopentan-1-one