20α-[3-(1'-hydroxyethyl)-4-nitrophenoxymethyl]-3β-methoxy-5-pregnen

3β-methoxy-20α-(3-p-toluenesulfonylhydrazonomethyl-4-nitro-phenoxymethyl)-5-pregnen

20α-(3-diazomethyl-4-nitro-phenoxymethyl)-3β-methoxy-5-pregnen

20α-(3-hydroxymethyl-4-nitrophenoxymethyl)-3β-methoxy-5-pregnen

3β-methoxy-20α-[4-nitro-3-{1'-(p-nitrophenoxycarbonyloxy)ethyl}-phenoxymethyl]-5-pregnen