SCHEDULED MAINTENANCE:
The synthesis of 1β-methyl-5α,10α-oestrane derivatives is reported. It is shown that 1β-methyl-11-oxo-5α,9α,10α-19-norsteroids are easily epimerized at C-9, thus providing a new route to retro-steroids.
A. D. Cross, E. Denot and P. Crabbé, J. Chem. Soc. C, 1969, 329 DOI: 10.1039/J39690000329
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