1.alpha.-hydroxy-steroids

Details 1.alpha.-hydroxy-steroids 1.alpha.-hydroxy-steroids

C - Chemistry, Metallurgy

07

J

195/26, 260/40

C07J 7/00 (2006.01) C07J 1/00 (2006.01) C12P 1/00 (2006.01) C12P 33/00 (2006.01) C12P 33/06 (2006.01)

Patent

CA 1050530

ABSTRACT OF THE DISCLOSURE A 1-hydroxy-steroid of the general formula Image (I), which is strongly gestagenic is produced by fermenting a compound of the general formula Image (II), with a fungal culture of a strain of a genus selected from the group consisting of Rhizoctania, Calonectria, Glomerella, Aspergillus, Corticium, Septomyxa, Mucor, Isaria, Irpex and Fusarium. The resulting 1.alpha.,17.beta.-dihydroxy-steroid can be ester- ified to form an alkanoyloxy group containing 1 to 8 carbon atoms. In the above formulae, R, reprenents a methyl or ethyl group; R2 and R3 each represents a hydrogen atom or an alkanoyl group containing 1 to 8 carbon atoms; and R4 represents a an ethynyl group.

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