摘要:运用比较分子力场分析方法(CoMFA)和比较分子相似性指数分析法(CoMSIA)对这些Rho激酶抑制剂化合物的结构参数和pIC50值进行分析,以58个分子结构和pIC50值已知的Rho激酶抑制剂化合物为训练集, 用三文定量构效关系(3D-QSAR)方法建立了预测模型,采用抽一法(leave one out,LOO) 检验了预测模型的可信性,接着用一个由5个Rho激酶抑制剂化合物组成的测试集进一步验证预测模型的预测能力,用交叉验证系数q2和相关系数R2的值来证实3D-QSAR 预测模型是否有良好的预测能力。研究结果表明我们所建立的3D-QSAR模型在统计学上具有明确、良好的预测能力。6701
关键词:三文定量构效关系(3D-QSAR);Rho激酶抑制剂;pIC50值;CoMFA;CoMSIA
Study of the 3D quantitative structure-activity relationship (QSAR) in Rho kinase inhibitor
Abstract:Using comparative molecular field analysis (CoMFA) and comparative molecular similarity indices analysis (CoMSIA) to analyze the structural parameters and the pIC50 value of these Rho kinase inhibitor,I select 58 of them for the training set,using three-dimensional quantitative structure-activity relationship (3D-QSAR) method to build a prediction model,using the pumping method (leave one out, LOO) to test the credibility of the forecasting model, and then use a test set by 5 compounds further validate the predictive capability of the prediction model,and using cross-validation coefficient of q2 and the value of the correlation coefficient R2 QSAR prediction model has good predictive ability or not.The results show that the 3D-QSAR model which we built has statistically clear, and good predictive ability.