3-(bromomethyl)-2,2-dimethyloxirane

(1S,3R,20S)-1,3-bis(tert-butyldimethylsilyloxy)-20-(3-hydroxy-3-methylbuthyloxy)pregn-5-ene

20-(3-羟基-3-甲基丁氧基)孕甾-5,7-二烯-1,3-二醇

1α,3β-bis(tertbutyldimethylsilyloxy)-20α-(3-oxobutyloxy)-5,7-pregnadiene

1α,3β-bis(tert-butyldimethylsilyloxy)-20(S)-(2-ethyloxycarbonylethyloxy)pregna-5,7-diene