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

16-hydroxymethylene-estrone

3-O-tert-butyldimethylsilyl-16β-cyanoestrone

3-O-tert-butyldimethylsilylestra-1,3,5(10)-triene-[17,16-c]pyrazole

3-O-tert-butyldimethylsilylestra-1,3,5(10)-triene-[17,16-c]-(1'-propionitrile)pyrazole