&NA; A synthetic route that utilizes a cross‐metathesis reaction with &Dgr;22 steroids has been developed to prepare sterols with varying C‐27 side‐chains. Natural sterols containing hydroxyl groups at the 25 and (25R)‐26 positions were prepared. Enantiomers of cholesterol and (3&bgr;,25R)‐26‐hydroxycholesterol (27‐hydroxycholesterol) trideuterated at C‐19 were prepared for future biological studies
                                    &NA; 已经开发出一种利用与 &Dgr;22 类
固醇的交叉复分解反应来制备具有不同 C-27 侧链的
甾醇的合成路线。制备了在 25 和 (25R)-26 位含有羟基的天然
甾醇。制备了在 C-19 处三
氘化的
胆固醇和 (3&bgr;,25R)-26-羟基
胆固醇(27-羟基
胆固醇)的对映异构体,用于未来的
生物学研究。亮点氧
甾醇对映体的合成。&Dgr;22 类
固醇的交叉复分解反应。对映选择性合成。