An efficient preparation of hydroxysteroids by a one-pot, simultaneously rapid deprotection of 3-acyloxy groups and reduction of D-ring ketones (nitrile) of steroids using DIBAL-H in the presence of NiCl2 (10 mol %) is described. The attractive features of this procedure for the preparation of the hydroxysteroid derivatives are the mild reaction conditions, short reaction time, excellent yields, clean
描述了在 NiCl2 (10 mol%) 存在下使用 D
IBAL-H 通过一锅法同时快速脱保护 3-酰氧基和还原类
固醇的 D 环酮(腈)来有效制备羟基类
固醇的方法。这种制备羟基类
固醇衍
生物的方法的吸引人的特点是反应条件温和、反应时间短、产率高、反应曲线干净和催化剂体系便宜。