A process for the preparation of 11-methylene steroids from di-keto steroids involves selective olefination of the ketone at position 11 of the di-keto steroids. The resulting 11-methylene steroid products can be used as intermediates in the preparation of the synthetic steroids, Etonogestrel and Desogestrel, as well as other pharmaceutically active agents.
从二
酮类固醇制备 11-亚甲基
固醇的工艺涉及二
酮类固醇第 11 位酮的选择性烯化。得到的 11-亚甲基类
固醇产品可用作合成类
固醇、
依托孕烯和去托孕烯以及其他药物活性剂的中间体。