(1R,2S,4aR,4bS,8aS,10aR)-1-(tert-Butyl-dimethyl-silanyloxymethyl)-2-hydroxymethyl-4b,8,8,10a-tetramethyl-tetradecahydro-phenanthren-2-ol

tert-butyl(((1R,2S,4aR,4bS,8aS,10aR)-2',2',4b,8,8,10a-hexamethyldodecahydro-1H-spiro[phenanthrene-2,4'-[1,3]dioxolan]-1-yl)methoxy)dimethylsilane

2-hydroxy-3-[2-((1S,2S,4aR,4bS,8aS,10aR)-1,2,3,4,4a,4b,5,6,7,8,8a,9,10,10a-tetradecahydro-2-hydroxy-2-hydroxymethyl-4b,8,8,10a-tetramethyl-2,2'-di-O-isopropylidene-trans-anti-trans-phenanthryl)-(E)-ethynyl]-5-butenolide

2-hydroxy-3-[2-((1S,2S,4aR,4bS,8aS,10aR)-1,2,3,4,4a,4b,5,6,7,8,8a,9,10,10a-tetradecahydro-4b,8,8,10a-tetra-methyl-2,2'-di-O-isopropylidene-trans-anti-trans-phenanthryl)-(E)-ethynyl]-5-butenolide

4-[2-((1S,2S,4aR,4bS,8aS,10aR)-1,2,3,4,4a,4b,5,6,7,8,8a,9,10,10a-tetradecahydro-4b,8,8,10a-tetra-methyl-2,2'-di-O-isopropylidene-trans-anti-trans-phenanthryl)-(E)-ethynyl]-2-trimethylsilylfuran