对选择性甲状腺激素受体调节器的哈梅特分析揭示了对激素抗剂的结构和电子要求
Ngoc-Ha Nguyen1, James W Apriletti, John D Baxter
1Program in Chemistry and Chemical Biology, Department of Pharmaceutical Chemistry, University of California-San Francisco, San Francisco, CA 94143-0446, USA.
选择性甲状腺激素受体 (TR) 调节剂具有治疗潜力. 研究人员发现,特定的电子性质,不一定是基,是新型化合物中TR抗体活性的关键.
科学领域:
- 内分泌学 在内分泌学.
- 药用化学 医学化学
- 分子药理学分子药理学
背景情况:
- 选择性甲状腺激素受体 (TR) 调节剂是与激素信号相关的疾病的潜在治疗方法.
- 强大的TR抗剂NH-3的5'-p-nitroaryl部分在抗作用需要进一步调查.
- 了解TR调节器的结构-活性关系 (SAR) 对药物开发至关重要.
研究的目的:
- 通过修改NH-3结构来探索TR对抗的化学特征.
- 为了扩大SAR数据的5'-phenylethynylGC-1衍生物作为潜在的TR调节器.
- 合成和评估具有不同电子特性的新型TR调节器.
主要方法:
- 开发了一种改进的合成路径,使用催化化学5'-phenylethynyl化合物.
- 在5'-位置合成了16种具有不同电子特性的新型类似物.
- 评估了所有合成类型的TR结合亲和力和交易活化活性.
主要成果:
- 5'-位置换降低了结合亲和力,但保持了TRbeta选择性.
- 类似物表现出一系列的激动剂,对抗剂和混合活性,与电子特征相关 (哈梅特分析).
- NH-5,NH-7,NH-9,NH-11和NH-23表现出完全的对抗活性,证明基组是不必要的.
结论:
- 在5'-aryl延伸上用电子撤回组进行副替代对TR抗剂活性至关重要.
- 反对剂的强度与替代剂的电子性质 (西格玛值) 线性相关,独立于结合亲和力.
- 这些发现为设计新型选择性甲状腺激素受体调节器提供了宝贵的见解.
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