(1S,3S,3aR,4R,5R,6R,7aS)-4-tert-butyldimethylsiloxy-3-(3-hydroxy-4-methoxybenzyl)7-methylene-1-(vinyl)octahydroindene-5,6-diol

(1R,3R,3aR,4R,5R,6S,7R)-4-tert-butyldimethylsiloxy-5,6-O-isopropylidenedioxy-3-[4-methoxy-3-(methoxymethoxy)benzyl]-7-oxooctahydroindene-1-carbaldehyde

(1S,3S,3aR,4R,5R,6R,7aS)-3-(3-acetoxy-4-methoxybenzyl)-4-tert-butyldimethylsiloxy-7-methylene-1-(vinyl)octahydroindene-5,6-diol

(1S,3S,3aS,4S,5R,6R,7R,7aR)-7-tert-butyldimethylsiloxy-5,6-O-isopropylidenedioxy-1-[4-methoxy-3-(methoxymethoxy)benzyl]-4-methylene-3-(vinyl)octahydroindene

(3aR,4R,4aR,5S,7S,7aS,8aR)-5-(3-acetoxy-4-methoxybenzyl)-4-tert-butyldimethylsiloxy-8-methylene-7-(vinyl)octahydroindeno[5,6-d,1,3]dioxol-2-thione