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Updated: May 30, 2025

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设计和合成的四中[3,4-c]Pyrazole西格玛-1受体连接体的设计和合成
Giuseppe Cosentino1, Maria Dichiara1, Giuliana Costanzo1
1University of Catania, Dipartimento di Scienze del Farmaco e della Salute, Viale A. Doria 6, 95125, Catania, Italy.
研究人员开发了新型的四中[3,4-c]pyrazole化合物作为西格玛-1受体 (S1R) 配体. 化合物19显示出有希望的S1R亲和力和选择性,降低了心脏毒性风险,为更安全的S1R疗法提供了潜力.
科学领域:
- 药用化学 医学化学
- 神经药理学神经药理学
- 药物发现 药物发现 药物发现
背景情况:
- 西格玛-1受体 (S1R) 配体正在研究治疗潜力.
- 开发具有减少目标外效应的选择性S1R配体,特别是hERG通道抑制,仍然是一个挑战.
研究的目的:
- 设计和合成新型四中[3,4-c]pyrazole衍生物作为S1R配体.
- 为了优化对S1R的联体亲和力,同时最大限度地减少与S2R的结合,减少心脏毒性.
主要方法:
- 合成四水烯[3,4-c]pyrazole衍生物的合成.
- 放射性配体结合试验以确定对S1R和S2R的亲和力.
- 在体外评估hERG通道抑制用于心脏毒性评估.
主要成果:
- 化合物19 (AD417) 呈现出显著的S1R亲和力 (Ki=75 nM) 和比S2R.6倍的选择性.
- 皮罗利丁的修改是受体相互作用的关键,可能涉及与Glu172.2相互作用的质子.
- 化合物19显示出更安全的心脏毒性特征,hERG IC50为5.8μM,与维拉帕米尔和哈洛佩里多尔相比.
结论:
- 可以优化四胺[3,4-c]醇支架,以选择性S1R结合.
- 结构性修改,特别是对的,对于增强S1R亲和力和选择性至关重要.
- 化合物19代表了开发S1R向治疗药物的有希望的头,降低了hERG相关心脏毒性风险.
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