(3R,3aS,9aS,9bS)-2,3,3a,9,9a,9b-Hexahydro-3-hydroxy-3-(hydroxymethyl)-3a,6-dimethyl-1H-benz[e]indene-5,7-(4H,8H)-dione 3,1'-O-Isopropylidene Acetal

(3R,3aS,6S,9aS,9bS)-2,3,3a,9,9a,9b-Hexahydro-3-hydroxy-3-(hydroxymethyl)-6-(3-oxobut-1-yl)-3a,6-dimethyl-1H-benz(e)indene-5,7-(4H,8H)-dione

(3R,3aS,6S,9aS,9bS)-2,3,3a,9,9a,9b-Hexahydro-3-hydroxy-3-(hydroxymethyl)-6-(3-chloro-2-buten-1-yl)-3a,6-dimethyl-1H-benz(e)indene-5,7-(4H,8H)-dione 3,1'-O-Isopropylidene Acetal

11β-Hydroxy-spiro-(2',2'-dimethyl-1',3'-dioxolane)-4',17-androst-5-en-3-one 3-(Ethylene acetal)

(8aS,9R,11aS,11bS)-2',2',8a-trimethyl-1,2,3a,4,8,8a,10,11,11a,11b-decahydrospiro[indeno[4,5-h]indazole-9,4'-[1,3]dioxolane]-3,7-dione