Comparative Molecular Field Analysis of Hydantoin Binding to the Neuronal Voltage-Dependent Sodium Channel
作者:Milton L. Brown、Congxiang C. Zha、Christopher C. Van Dyke、George B. Brown、Wayne J. Brouillette
DOI:10.1021/jm980556l
日期:1999.5.1
general features that result in enhanced binding to the sodium channel. These include a preferred 5-phenyl ring orientation and a favorable steric effect resulting from the C5-alkyl chain. This model was then utilized to accurately predict literature sodium channel activities for hydantoins 14-20, which were not included in the training set. Finally the hydantoin CoMFA model was used to design the structurally
比较分子场分析(CoMFA)是一种3-D QSAR技术,被广泛用于将生物学活性与空间和静电场中观察到的差异相关联。在这项研究中,CoMFA被用于基于14种结构多样的5-苯基乙内酰脲类似物生成一个模型,以描述对于增强钠通道结合很重要的结构和静电特征。通过体外钠通道结合活性的偏最小二乘(PLS)分析(表示为log IC50)和CoMFA描述符列进行关联,得出最终的非交叉验证模型,其训练集的R2 = 0.988。对于相同的训练集,最终的CoMFA模型比具有log P(R2 = 0.801)的简单关联更好地解释了数据。CoMFA的空间图和静电图描述了两个一般特征,这些特征可增强与钠通道的结合。这些包括优选的5-苯环取向和由C 5-烷基链产生的有利的空间效应。然后,利用该模型来准确预测乙内酰脲14-20的文献钠通道活性,但该组未包括在训练集中。最后,使用乙内酰脲CoMFA模型设计结构新颖的α-羟基-