A stereoselective synthesis of 1 α -hydroxy-vitamin D3 was achieved through the solvolysis of the 3,5-cyclovitamin D3 which was prepared from (−)-(3S,5R)-2-methylene-3-methoxymethyloxybicyclo[3.1.0]hexanecarboxaldehyde and the des-AB-8-bromomethylene-cholestane.
通过溶解由 (-)-(3S,5R)-2- 亚甲基-3-甲氧基甲基氧双环[3.1.0]己
甲醛和去-AB-8-
溴亚甲基胆甾烷制备的 3,5 环
维生素 D3,实现了 1 α - 羟基
维生素 D3 的立体选择性合成。