Journal of the Chemical Society. Perkin transactions I p. 1041 - 1045 (1981)
Update date:2022-08-02
Topics:
Crabb, Trevor A.
Saul, John A.
Williams, Roger O.
The microbiological transformation of 5α-androstan-17-one, and the 3β-acetoxy- and 3α-hydroxy-derivatives, by Cunninghamella elegans is dominated by 1β,7-dihydroxylation or 7-monohydroxylation. 3α-Acetoxy-5α-androstan-17-one undergoes predominant 6β,11β-dihydroxylation. 17a-Aza-D-homo-5α-androstan-17-one and the 3α-acetoxy-derivative undergo predominant monohydroxylation at 6β or 7α, in contrast to the 3β-acetoxy-derivative which, although undergoing similar monohydroxylation, gives good yield of 9α-monohydroxylated products.
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