16-Methylene-17-keto-steroids are transformed to the corresponding 16-methylene-17a-hydroxyprogesterones which are intermediates useful in the production of betamethasone, diflorasone diacetate and melengesterol acetate. 17a-Hydroxy-6, 16-dimethylene-pregn-4-ene-3, 20-dione is simultaneously isomerized and acylated to 17a-hydroxy-6-methyl-16-methylenepregna-4, 6-diene-3, 20-dione 17-acetate.
16-亚甲基-17-
酮类类
固醇可转化为相应的 16-亚甲基-17a-羟基
黄体酮,这些
黄体酮是生产
倍他米松、双
醋酸地
氟松和
醋酸美伦孕酮的中间体。17a-羟基-6,16-二亚甲基孕甾-4-烯-3,20-二酮同时异构化和酰化为 17a-羟基-6-甲基-16-亚甲基孕甾-4,6-二烯-3,20-二酮 17-
乙酸酯。