21-acetals and mixed acetals of steroidal 21-aldehydes,...

21-acylates of...

21-acylates of...

21-acyloxy-16-methyl-17-hydroxy-9(11)-pregnenes

21-acyloxy-17.alpha.-hydroxypregnane-3,11,20-trione and...

21-acyloxy-4-pregnene-3,6,20-triones

21-acyloxy-pregn-9(11)-en-20-one compounds

21-acyloxylation of 20-keto steroids

21-aldehydes of the pregnane series and derivatives thereof...

21-aldehydes of the pregnane series and derivatives thereof...

21-alkanesulfonyloxy steroids

21-amino derivatives of corticosteroids

21-azido-3,20-diketo-11-oxygenated steroids

21-bis-steroid-esters of dicarboxylic acids of the pregnane...

21-bromo-16-methylpregnane-17.alpha.-ol-20-ones and process

21-butylacetate esters of 9.alpha.-fluoro-4-pregnenes

21-carboxylic acid esters of pregnane compounds

21-chloro-pregnane derivative

21-corticoid carbonates

21-deoxymacbecin analogues useful as antitumor agents