3.beta.,7.beta.,15.alpha.-trihydroxy-5-androsten-17-one, its...

Details 3.beta.,7.beta.,15.alpha.-trihydroxy-5-androsten-17-one, its... 3.beta.,7.beta.,15.alpha.-trihydroxy-5-androsten-17-one, its...

C - Chemistry, Metallurgy

07

J

260/21, 195/25,

C07J 1/00 (2006.01) C07J 21/00 (2006.01) C07J 53/00 (2006.01) C07J 71/00 (2006.01) C12P 33/00 (2006.01) C12P 33/06 (2006.01) C12P 33/12 (2006.01)

Patent

CA 1203796

Abstract of the Disclosure A process for the preparation of 3.beta.,7.beta.,15.alpha.- trihydroxy-5-androsten-17-one and the 3,15-dipivalate thereof comprises epimerizing 3.beta.,7.alpha.,15.alpha.-trihydroxy-5- androsten-17-one in the presence of a ketone with or without a solvent, with dilute mineral acid and sub- sequent treatment with an organic base, and optionally subsequently esterifying the 3.beta.- and 15.alpha.-positions of the resultant 3.beta.,7.beta.,15.alpha.-triol with a reactive derivative of pivalic acid.

411783

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