ISSN:
1573-9171
Keywords:
hydroxylation
;
Δ5-3β-hydroxysteroids
;
Δ5-3β,9α-dihydroxysteroids
;
Circinella sp.
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract A preparative method for 9a-hydroxylation of Δ5-3β-hydroxysteroids using the fungi ofCircinella sp. 10Kh-1220 not capable of modifying theA ring has been developed. It is established that the yields of the main and the side products greatly depend on the transformation conditions, mycelium age, and the structure of the steroid substrate. Under the optimal transformation conditions novel 9α-hydroxysubstituted derivatives of androstenolone, pregnenolone, 16-dehydro-16α,17α-epoxy-, and-16α-methoxypregnenolone have been obtained in 36–80 % yields.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00699849
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