Russian Chemical Bulletin p. 689 - 695 (1994)
Update date:2022-08-04
Topics:
Voishvillo, N. E.
Istomina, Z. I.
Kamernitsky, A. V.
A preparative method of 9α-hydroxylation of Δ5-3β-hydroxysteroids using the fungi of Circinella sp.IOKh-1220 not capable of modifying the ring A 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 36-80percent yields. - Key words: hydroxylation, Δ5-3β-hydroxysteroids, Δ5-3β,9α-dihydroxysteroids, Circinella sp.
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