17beta,19-Dihydroxy-1alpha-methyl-4-androsten-3-one 3-ethylenethioketal → 1alpha-Methyl-4-androstene-17beta,19-diol

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Reaction Steps

Raney nickel is added to a solution of 17β,19-dihydroxy-1α-methyl-4-androsten-3-one 3-ethylenethioketal in methanol and the resulting suspension is refluxed for four hours with rapid stirring. The suspension is cooled, filtered and the solvent evaporated. The remaining residue is chromatographed on silica gel and eluted with methylenechloride. Recrystallization from acetone-hexane yields the compound 1α-methyl-4-androstene-17β,19-diol.

Provenance & Evidence