The preparation of 3-methoxy-14β-estra-1,3,5-(10),8-tetraen-15-one is described, base-catalysed methylation of which compound affords the corrsponding 14α- and 14β-methyl compounds in a ratio of ca. 5 : 1.
J. R. Bull and J. Floor, J. Chem. Soc., Chem. Commun., 1980, 270 DOI: 10.1039/C39800000270
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