The synthesis of 7β-hydroxy-epiandrosterone (6) possessing strong anti-inflammatory properties was achieved starting from 3β-acetoxy-17,17-(ethylenedioxy)-5-androsten (1). This approach involved as a main step an allylic oxidation of the C-7 followed by two reduction reactions of the double bond and of the carbonyl group. This stereoselective synthesis in 5 steps gave 7β-hydroxy-epiandrosterone in 63% overall yield.
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| http://dx.doi.org/10.1016/j.steroids.2010.08.003 | DOI Listing |
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