(2S,2aS,4R,4aS,5R,6R,7R,7aS,7bR)-5-tert-butyldimethylsiloxy-2-hydroxy-6,7-(O-isopropylidenedioxy)decahydroindeno[7,1-bc]furan-4-carbaldehyde

(1R,5S,6S)-5-benzyl-5,6-dihydroxy-4-oxo-2-cyclohexenyl methanesulfonate

(1R,5S,6S)-5-benzyl-5,6-O-isopropylidenedioxy-4-oxo-2-cyclohexenyl methanesulfonate

(4R,5S,6S)-6-benzyl-4-hydroxy-5,6-O-isopropylidenedioxy-2-cyclohexen-1-one

(1R,3R,3aS,4S,5R,6R,7R,7aR)-7-tert-butyldimethylsiloxy-1-[(1S)-hydroxy[4-methoxy-3-(methoxymethoxy)phenyl]methyl]-3-hydroxymethyl-5,6-(isopropylidenedioxy)octahydroindene-4-ol