(2R,6R)-6-((3S,9S,10R,13R,14R,17R)-3-((tert-butyldimethylsilyl)oxy)-4,4,10,13-tetramethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl)-2-methylheptan-1-ol

3β-hydroxy-4,4-dimethyl-(25R)-26-(tert-butyldimethylsilyloxy)cholest-5-ene

(25R)-(26-tosyloxy)-4,4-dimethyl-5α-cholesta-8,14-diene-3β-ol

3β-(25R)-26-bis(tert-butyldimethylsilyloxy)4,4-dimethylcholest-5,7-diene

3-(tert-butyl-dimethyl-silanyloxy)-17-[6-(tert-butyl-dimethyl-silanyloxy)-1,5-dimethyl-hexyl]-4,4,10,13-tetramethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthrene