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

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

(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

(1S,3R,3aR,4S,7aS)-3-(3-acetoxy-4-methoxybenzyl)-4-tert-butyldimethylsiloxy-7-methylene-1-vinyl-1,2,3,3a,7,7a-hexahydroindene

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