Microbiological transformations of 3α-acetoxy-17a-aza-D-homo-5α-androstan-17-one and of 3α-acetoxy-5α-androstan-17-one with the fungus Cunninghamella elegans

Abstract
3α-Acetoxy-17a-aza-D-homo-5α-androstan-17-one is hydroxylated by Cunninghamella elegans to 3α-acetoxy-6β-hydroxy-, 3α-acetoxy-7α-hydroxy-, 3α,11α-dihydroxy-, and 3α,11β-dihydroxy-17a-aza-D-homo-5α-androstan-17-one, in contrast to the near carbocyclic analogue, 3α-acetoxy-5α-androstan-17-one, which is hydroxylated to 3α-acetoxy-6β,11β-dihydroxy-5α-androstan-17-one, 1β,3α-dihydroxy-5α-androstan-17-one, and 3α-acetoxy-6β-hydroxy-5α-androstane-11,17-dione.