【摘要】 采用比较分子场分析法(CoMFA)研究了55个四氢吡啶类毒蕈碱受体激动剂的三维定量构效关系(3D-QSAR),建立了具有较强预测能力的3D-QSAR模型.所得模型的交叉验证相关系数(q2)为0.507,常规相关系数(R2)为0.982,标准方差为0.218,说明系列化合物分子周围立体场和静电场的分布与生物活性间存在良好的相关性.模型不仅很好地预测了训练集和测试集化合物的活性,而且为设计活性更高的受体激动剂提供了理论依据.更多还原

【Abstract】 Three dimensional structure-activity relationship of 55 muscarinic receptor agonists were studied using comparative molecular field analysis (CoMFA) technique. The relationship between the activities and structures was significant with cross-validated value (q2), non-cross-validated value (R2) and standard error of estimate(SEE) of 0.507, 0.982 and 0.218, respectively. The result indicated that there is a good correlation between the distribution of molecular steric and electrostatic field and bioactivity. This model can not only well predict the activity of the compound in the training set and test set, but also contribute to gain further insights into the requirements for potential agonists and rational design of novel molecules based on the CoMFA contour plots.更多还原