the analogous natural steroids 17beta-hydroxy-5beta,9alpha,10beta-androstan-3-one and 5beta,9alpha,10beta-androstane-3,17-dione were very poor substrates , and gave the corresponding 3alpha ( equatorial,3r ) -hydroxy compounds , and , in the latter case , also an appreciable amount of 3beta ( axial , 3s ) -hydroxy-5beta,9alpha,10beta-androstan-17-one .
C0038317
steroids
C0002854
androstane