(1S,3aS,3bR,5aR,8aR,8bS,10aS)-1-(tert-Butyl-dimethyl-silanyloxy)-10a-methyl-6-methylene-tetradecahydro-dicyclopenta[a,f]naphthalen-5a-ol

Toluene-4-sulfonic acid (1S,3aS,3bR,5aR,8aR,8bS,10aS)-5a,10a-dimethyl-6-oxo-hexadecahydro-dicyclopenta[a,f]naphthalen-1-yl ester

(1R,3aR,3bS,5aS,6S,8aS,8bR,10aR)-6-((tert-butyldimethylsilyl)oxy)-5a-methyltetradecahydro-10aH-spiro[dicyclopenta[a,f]naphthalene-1,2'-oxiran]-10a-ol

Toluene-4-sulfonic acid (1S,3aS,3bR,5aR,6R,8aR,8bS,10aS)-6-hydroxy-5a,10a-dimethyl-hexadecahydro-dicyclopenta[a,f]naphthalen-1-yl ester