(3aS,3bR,4R,6aS)-4-benzyloxy-3,3a,3b,4,5,6,6a,7-octahydro-3a,5,5-trimethylcyclopentapentalen-2-one

(3R,3aR,3bS,7aR)-2,2,3b-Trimethyl-5-triisopropylsilanyloxy-3-trimethylsilanyloxy-2,3,3a,3b,4,7a-hexahydro-1H-cyclopenta[a]pentalene

(3aR,3bS,4S,6aS)-(-)-3,3a,3b,4,5,6,6a,7-octahydro-4-hydroxy-3a,5,5-trimethylcyclopenta<4.5>pentalen-2-one

5,5-dimethyl-2-(methylthio)-2-cyclopenten-1-one

(S)-5,5-dimethyl-2-(methylthio)-2-cyclopenten-1-ol