17.alpha.-Hydroxy-6,16-dimethylenepregn-4-ene-3,20-dione simultaneously isomerized and acylated to 17.alpha.-hydroxy-6-methyl-16-methylenepregna-4,6-diene-3,20-dione 17-acetate.
17.alpha.-羟基-6,16-二亚甲基孕-4-烯-3,20-二酮同时发生异构化和酰化反应,生成17.alpha.-羟基-6-甲基-16-亚甲基孕-4,6-二烯-3,20-二酮17-
醋酸酯。