FIELD: chemistry.
SUBSTANCE: 17β-oxoestratrienes of the general formula III 
and 17β-oxyestratrienes of the general formula II 
are used as intermediary products in obtaining 17α-alkyl-17β-oxyestra-1,3,5(10)-trienes of the general formula I 
with antiestrogenic effect, where Hal, R3, SK, R17', R17" represent elements listed in the invention claims.
EFFECT: improved method of obtaining the product.
19 cl, 4 ex
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