85390-93-8Relevant articles and documents
3β,7β,15α-Trihydroxy-5-androsten-17-one, its 3,15-dipivalate, and their preparation
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, (2008/06/13)
A process for the preparation of 3β,7β,15α-trihydroxy-5-androsten-17-one and the 3,15-dipivalate thereof comprises epimerizing 3β,7α,15α-trihydroxy-5-androsten-17-one in the presence of a ketone with or without a solvent, with dilute mineral acid and subsequent treatment with an organic base, and optionally subsequently esterifying the 3β- and 15α-positions of the resultant 3β,7β,15α-triol with a reactive derivative of pivalic acid.