6-{1-acetoxy-2-[2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-ethyl}-5a-formyl-8-hydroxy-2,2-dimethyl-5-oxo-3a,4,5,5a,6,7,9a,9b-octahydro-naphtho[1,2-d][1,3]dioxole-9-carboxylic acid allyl ester

acetic acid 17-(tert-butyl-diphenyl-silanyloxymethyl)-4,14-dihydroxy-13-methyl-1,7-dioxo-10-(2-trimethylsilanyl-ethoxymethoxymethyl)-4,5,6,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-11-yl ester

(3S,3aR,5R,5aS,5bR,9aS,10aS,13aR,13bS,15aR,15bS)-3-(((tert-butyldiphenylsilyl)oxy)methyl)-15b-hydroxy-3a,8,8,12,12-pentamethyl-15-oxo-14-(phenylselanyl)hexadecahydro-6H-cyclopenta[7,8][1,3]dioxolo[4',5':1,2]phenanthro[4,4a-d][1,3]dioxin-5-yl acetate

Acetic acid (R)-2-[(1R,2S)-2-(tert-butyl-diphenyl-silanyloxymethyl)-1-methyl-5-oxo-cyclopentyl]-1-[(3aS,5aR,6S,9aS,9bR)-2,2-dimethyl-5,8-dioxo-5a-(2-trimethylsilanyl-ethoxymethoxymethyl)-decahydro-naphtho[1,2-d][1,3]dioxol-6-yl]-ethyl ester