(3S,8S,9S,10R,13R,14S,17R)-17-((1R,5R)-1,5-Dimethyl-6-trityloxy-hexyl)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-3-ol

(25R)-3β,26-O-bis-p-nitrobenzoyl-16-oxo-26-hydroxycholesterol

3-O-acetyl-26-hydroxy-26-O-tosylcholesterol

(25S)-3β-acetoxy-26-trityloxycholest-5-ene

(25R)-3β,26-bis (tert-butyldimethylsilyloxy)-cholest-5-ene-7-one