1,3,4-三唑类化合物抗氧化活性的QSAR预测模型的建立

S. Saber, H. Mohamad, M. Aziz
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引用次数: 0

摘要

抗氧化剂可以通过终止反应链来控制自由基的生成。QSAR是用来解释生物活性与化合物结构之间关系的方法。本研究以区间偏最小二乘(iPLS)作为变量选择方法,并以PLS作为回归方法,建立1,3,4-三唑类衍生物的抗氧化活性与分子结构之间的QSAR模型。通过选择方法,选择6个描述符构建模型。含有6个描述符的模型可以解释95%的抗氧化剂方差。r2cal、r2cv、r2pre、RMSEC、RMSECV和RMSEP对所建立的QSAR模型进行了验证。结果表明,tdb05、E2u和H7u是模型中与抗氧化活性相关的最显著描述符。这三个是三维描述子,表明三维描述子对抗氧化活性非常弱。最终的QSAR模型可用于预测新合成的1,3,4-三唑类化合物的自由基清除活性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Development a QSAR Model of 1,3,4-Triazole Derivatives for Antioxidant Activity Prediction
Antioxidants can control the generation of free radical by terminating the reaction chain. QSAR is method that used to explain the relationship between biological activity and the structure of chemical compounds. The aim of this study to develop QSAR model between antioxidant activity and molecular structure of 1,3,4-triazole derivatives using interval partial least squares (iPLS) as a variable selection method, and PLS as a regression method. After selection methods, six descriptors were selected to build the model. The model with six descriptors can explain 95% variance of antioxidant. The developed QSAR models have been confirmed by r2cal, r2cv, r2pre, RMSEC, RMSECV and RMSEP. The result shows that TDB05s, E2u and H7u are the most significant descriptors in the model which are related to antioxidant activity. These three are 3D descriptors and indicated that 3D descriptors very impotent to antioxidant activities. The final QSAR model can be used as a guide to predict free radical scavenger activities of new synthesized 1,3,4-triazol compounds.
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