3-Hydroxypyridine-4-one derivatives have shown good inhibitory activity against bacterial strains. In this work we report the application of MOLMAP descriptors based on empirical physicochemical properties with genetic algorithm partial least squares (GA-PLS) and counter propagation artificial neural networks (CP-ANN) methods to propose some novel 3-hydroxypyridine-4-one derivatives with improved antibacterial activity against Staphylococcus aureus. A large collection of 302 novel derivatives of this chemical scaffold was selected for this purpose. The activity classes of these compounds were determined using the two quantitative structure activity relationships models. To evaluate the predictability and accuracy of the obtained models, nineteen compounds belonging to all three activity classes were prepared and the activity of them was determined against S. aureus. Comparing the experimental results and the predicted activity classes revealed the accuracy of the obtained models. Seventeen of the nineteen synthesized molecules were correctly predicted by GA-PLS model according to the antimicrobial evaluation method. Molecules 5f and 5h proved to be moderately active and active experimentally, but were predicted as inactive and moderately active compounds, respectively by this model. The CP-ANN based prediction was correct for sixteen out of the nineteen synthesized molecules. 5a, 5h and 5q were moderately active and active based on the antimicrobial assays, but they were introduced as members of inactive, moderately active and inactive classes of compounds, respectively according to CP-ANN model.
3-
羟基吡啶-4-
酮衍
生物对细菌菌株具有良好的抑制活性。在这项工作中,我们报告了基于经验理化性质的
MOL
MAP 描述因子与遗传算法偏最小二乘法(GA-PLS)和反向传播人工神经网络(
CP-ANN)方法的应用,提出了一些对
金黄色葡萄球菌具有更好抗菌活性的新型 3-
羟基吡啶-4-
酮衍
生物。为此,我们选择了该
化学支架的 302 种新型衍
生物。利用两个定量结构活性关系模型确定了这些化合物的活性类别。为了评估所获得模型的可预测性和准确性,制备了属于所有三个活性类别的 19 种化合物,并测定了它们对
金黄色葡萄球菌的活性。对比实验结果和预测的活性类别,可以发现所获得模型的准确性。根据抗菌评价方法,GA-PLS 模型正确预测了 19 个合成分子中的 17 个。实验证明,分子 5f 和 5h 具有中度活性和活性,但该模型却将其分别预测为无活性和中度活性化合物。在 19 个合成分子中,基于
CP-ANN 的预测有 16 个是正确的。根据抗菌试验,5a、5h 和 5q 具有中度活性和活性,但根据
CP-ANN 模型,它们分别属于非活性、中度活性和非活性化合物类别。