(E)-(1R,2R,3S,7R,8S,9S,14R)-9-Benzyloxy-4-bromomethyl-3-methoxymethoxy-2,7,14-trimethyl-tricyclo[5.4.3.01,8]tetradec-4-ene-6,12-dione

(3S,3aS,4R,7S,7aR,9R)-7a-Acetyl-3-benzyloxy-7-methoxymethoxy-4,9-dimethyl-octahydro-4,7-ethano-inden-5-one

(E)-3-((1R,3aR,4R,7S,7aS,8S)-1-Benzyloxy-4-methoxymethoxy-7,8-dimethyl-6-oxo-octahydro-4,7-ethano-inden-3a-yl)-but-2-enal

(3R,3aS,4S,7R,7aR,9S)-3-Benzyloxy-7-methoxymethoxy-4,9-dimethyl-7a-((E)-1-methyl-3-oxo-but-1-enyl)-octahydro-4,7-ethano-inden-5-one

rac-(3R,3aS,4S,5S,6aR,7S,10R,10aS)-3-(benzyloxy)-6a-hydroxy-4,5,8,10-tetramethyl-1,2,3,3a,4,5,6,6a,7,10-decahydro-4,7-methanocyclopenta[d]naphthalen-11-one