p. 100 - 106
(2007/10/02)(R)-3-[(3S,8S,9S,10R,13R,14S,17R)-3-(tert-Butyl-dimethyl-silanyloxy)-10,13-dimethyl-2,3,4,7,8,9,10,11,12,13,14,15,16,17-tetradecahydro-1H-cyclopenta[a]phenanthren-17-yl]-butan-1-ol
p-toluenesulfonyl chloride
t-butyldimethylsiyl triflate
(3β,20R)-3-<(tert-butyldimethylsilyl)oxy>-24-norchol-5-en-23-al
(2β,20S)-3-<(tert-butyldimethylsilyl)oxy>pregn-5-ene-20-carboxaldehyde