β-santonin
acetic acid
benzene
acetone
(11R)-6α-hydroxy-3-oxo-eudesman-12-oic acid
tetrahydro-β-santonin
(11R)-6α-hydroxy-3-oxo-5β-eudesman-12-oic acid-lactone
(3S,3aS,5aS,9S,9aR,9bS)-3,5a,9-trimethyloctahydronaphtho[1,2-b]furan-2,8-dione
(11R)-6α-hydroxy-5β-eudesman-12-oic acid-lactone
(3R,5aR,9R,9aS,9bS)-3,9-Dimethyl-3,9-bis-phenylselanyl-5a-vinyl-octahydro-furo[2,3-f]isochromene-2,8-dione