parent HES. In vivo testing of 6a and 6b shows that 6a has the same potency in reducing accessory sex organ weights and testosterone levels in the intact mouse as has meso‐HES, but strongly decreased estrogenic activity. Syntheses and testing of 7 having no ethyl side chains revealed the necessity of these groups for biological activity.
meso 或 d,l HES 的
酚环之一的选择性 Birch 还原导致化合物 6a 和 6b 对雄激素受体作为各自的母体 HES 发挥更高的结合亲和力。6a 和 6b 的体内测试表明,6a 在降低完整小鼠的附属性器官重量和
睾酮水平方面与 meso-HES 具有相同的效力,但强烈降低
雌激素活性。没有乙基侧链的 7 的合成和测试揭示了这些基团对
生物活性的必要性。