(16β,17α)-(+)-2-[3-(tert-butyldimethylsilyloxy)-16,17-dihydroxy-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl]-6-methylheptan-3-one 3-ethylene ketal

3-(tert-butyldimethylsilyloxy)-19-nor-17β-pregna-1,3,5(10)-triene-21,17-carbolactone

3-(tert-butyldimethylsilyloxy)-17β-(3'-hydroxypropyl)-1,3,5(10)-estratrien-17α-ol

(8R,9S,13S,14S,16R,17S)-16-allyl-3-((tert-butyldimethylsilyl)oxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-yl acetate

(8R,9S,13S,14S,16R,17S)-16-(3-Amino-propyl)-3-(tert-butyl-dimethyl-silanyloxy)-13-methyl-7,8,9,11,12,13,14,15,16,17-decahydro-6H-cyclopenta[a]phenanthren-17-ol