FIELD: organic chemistry, steroids. SUBSTANCE: product: new chemical compound of the formula: 
which is 17α-acetoxy-3β-butanoylhydroxy-6-methylpregna-4,6-diene-20-one showing gestagenic activity. Method of its synthesis ensures to carry out processes of regio- and stereoselectivity at high yield and purity. EFFECT: improved method of synthesis, enhanced gestagenic activity of the end product. 1 tbl
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