rac-(3aR,5aS,9aR,9bR)-9b-methyl-3-oxooctahydro-4H,9aH-3a,5a-epoxycyclopenta[c]chromene-9a-carbonitrile

rac-(3R,3aR,5aS,9aR,9bR)-3-hydroxy-9b-methyloctahydro-4H,9aH-3a,5a-epoxycyclopenta[c]chromene-9a-carbonitrile

rac-(3R,3aS,5aR,9aS,9bS)-3-hydroxy-9b-methyloctahydro-4H,9aH-3a,5a-epoxycyclopenta[c]chromene-9a-carbonitrile

(R)-1-[(1R,3R)-3-(tert-Butyl-dimethyl-silanyloxy)-1-methyl-2-methylene-cyclopentyl]-2-oxo-cyclohexanecarbonitrile

rac-((3R,3aR,4aR,8aR,8bR)-6-hydroxy-6,8b-dimethyloctahydro-3,4a-epoxycyclopenta[b]benzofuran-3a,8a-diyl)dimethanol