(4aS,6aS,12aR,12bS)-2H-11-chloro-1,3,4,4a,5,6,6a,12,12a,12b-decahydro-4,4,6a,12b-tetramethyl-benzo[a]xanthene-9,10-diol

3-chloro-1,2,5-tris(tert-butyldimethylsilyloxy)benzene

1,2-dibenzyloxy-3-chloro-5-(tert-butyldimethylsilyloxy)benzene

Formic acid 3,4-bis-benzyloxy-5-chloro-phenyl ester

5-bromo-6-chloro-1,2,4-tris(tert-butyldimethylsilyloxy)benzene

3,4-dibenzyloxy-5-chlorophenol

(1S,4aS,8aS)-1-[(3,4-dibenzyloxy-6-tert-butyldimethylsilyloxy-2-chlorophenyl)-hydroxymethyl]-3H-2-methylene-1,4,4a,5,6,7,8,8a-octahydro-5,5,8a-trimethylnaphthalene

(4aS,6aS,12bS)-2H-9,10-dibenzyloxy-11-chloro-1,3,4,4a,5,6,6a,12b-octahydro-4,4,6a,12b-tetramethyl-benzo[a]xanthene

(4aS,6aS,12bS)-2H-9,10-bis(tert-butyldimethylsilyloxy)-11-chloro-1,3,4,4a,5,6,6a,12b-octahydro-4,4,6a,12b-tetramethyl-benzo[a]xanthene

(1S,4aS,8aS)-3H-2-methylene-1,4,4a,5,6,7,8,8a-octahydro-5,5,8a-trimethylnaphthalene-1-carboxaldehyde

4-bromo-3-chloro-1,2-dibenzyloxy-5-(tert-butyldimethylsilyloxy)benzene

(4aS,6aS,12bS)-2H-9,10-dibenzyloxy-11-chloro-1,3,4,4a,5,6,6a,12b-octahydro-6a-[(phenylseleno)methyl]-4,4,12b-trimethyl-benzo[a]xanthene

(4aS,6aS,12aS,12bS)-2H-12-acetoxy-9,10-dibenzyloxy-11-chloro-1,3,4,4a,5,6,6a,12,12a,12b-decahydro-4,4,6a,12b-tetramethyl-benzo[a]xanthene