Structure–Activity Relationship Study of Subtype-Selective Positive Modulators of K<sub>Ca</sub>2 Channels
作者:Naglaa Salem El-Sayed、Young-Woo Nam、Polina A. Egorova、Hai Minh Nguyen、Razan Orfali、Mohammad Asikur Rahman、Grace Yang、Heike Wulff、Ilya Bezprozvanny、Keykavous Parang、Miao Zhang
DOI:10.1021/acs.jmedchem.1c01473
日期:2022.1.13
analogues were synthesized by replacing the cyclohexane moiety with different 4-substituted cyclohexane rings, tyrosine analogues, or mono- and dihalophenyl rings and were subsequently studied for their potentiation of KCa2 channel activity. Among the N-benzene-N-[2-(3,5-dimethyl-pyrazol-1-yl)-6-methyl-4-pyrimidinamine derivatives, halogen decoration at positions 2 and 5 of benzene-substituted 4-pyrimidineamine
通过用不同的4-取代基取代环己烷部分,合成了一系列修饰的N-环己基-2-(3,5-二甲基-1H-吡唑-1-基)-6-甲基嘧啶-4-胺(CyPPA)类似物环己烷环、酪氨酸类似物或单卤代苯基环和二卤代苯基环,随后研究了它们对 K Ca 2 通道活性的增强作用。 N-苯-N- [2-(3,5-二甲基-吡唑-1-基)-6-甲基-4-嘧啶胺衍生物中,化合物中苯取代的4-嘧啶胺的2位和5位有卤素修饰与母体相比, 2q赋予了约 10 倍的效力,而化合物2o中苯取代的 4-嘧啶胺的 3 和 4 位上的卤素取代赋予了增强 K Ca 2.2a 通道的约 7 倍的效力模板 CyPPA。两种化合物都保留了 K Ca 2.2a/K Ca 2.3 亚型选择性。根据初步评估,选择化合物2o和2q在 2 型脊髓小脑共济失调 (SCA2) 的电生理模型中进行测试。这两种化合物都能使 SCA2 小鼠小脑切片中浦肯野细胞的异常