以ALS为靶标的新型除草剂的分子设计、合成及生物活性研究Ⅷ.Hansch方法与CoMFA方法相结合研究稠杂磺酰胺类除草剂的构效关系

采用Hansch方法和CoMFA方法从二维及三维空间上对三唑并嘧啶磺酰胺类除草剂的结构与活性关系进行了系统研究,结果发现化合物的立体及电学性质对除草活性有重要影响.化合物要保持高活性需满足合适的立体要求及酸性.此外,研究工作表明Hansch方法和CoMFA方法在一起使用可以更好地反映出药物分子的构效关系.     

Design, syntheses and biological activity of novel ALS inhibitors (IX)

Quantitative structure-activity relationships for herbicidal activity against rape of sulfonylurea and triazolopyrimidine-2-sulfonamide derivatives were examined three-dimensionally using comparative molecular field analysis (CoMFA). The CoMFA results show that the slopes in steric and electrostatic fields around the molecule were significant for both series in governing the potency variations in herbicidal activity. Based upon the successful superposition between the two series, the herbicidal activity was analyzable with a single equation for the combined set of compounds, which suggested that the two different series of compounds have a common region of the receptor site. Project supported by the National Natural Science Foundation of China (Grant No. 29832050), the Special Key Fund of Natural Science of Tianjin (Grant No. 983801011) and the Doctoral Fund of the Education Ministry of China.