17.beta.-Cyano-17.alpha.-hydroxy steroids (I) are transformed to 17.alpha.-halo silyl ethers (II) which are intermediates useful in the production of progesterones (V), 17-hydroxyprogesterones (VI), corticoids (VII) and 21-halo corticoids (III) which can readily be transformed to corticoids (VII).
17-beta-
氰基-17-alpha-羟基类
固醇(I)被转化为17-alpha-卤代
硅基醚(II),这些中间体在
孕酮(V)、17-羟基
孕酮(VI)、皮质类
固醇(VII)和21-卤代皮质类
固醇(III)的生产中非常有用,这些可以轻松地转化为皮质类
固醇(VII)。