Abstract The dehydration-epimerization reaction applied to a 5α-hydroxy-6β-methyl-3-oxo- 19-nor-steroid, under acid conditions, leads to a mixture of the 6α-methyl-3-oxo-Δ 4-19-nor- steroid and its 6β-epimer. This is in contrast to the normal steroid series, in which exclusively the 6α-methyl epimer is formed. A complete conversion to the 6α-methyl compounds can be achieved by alkaline hydrolysis of the corresponding 3-acetoxy-6-methyl-Δ 3, 5 ...
![(6S,8R,9R,10R,13S,14S)-6,13-dimethyl-1,2,6,7,8,9,10,11,12,14,15,16-dodecahydrocyclopenta[a]phenanthrene-3,17-dione Structure](https://image.chemsrc.com/caspic/440/33585-96-5.png)
