Design, Synthesis, and Quantitative Structure−Activity Relationship Study of Herbicidal Analogues of Pyrazolo[5,1-<i>d</i>][1,2,3,5]tetrazin-4(3<i>H</i>)ones
作者:You-quan Zhu、Chao Wu、Hua-bin Li、Xiao-mao Zou、Xue-kai Si、Fang-zhong Hu、Hua-zheng Yang
DOI:10.1021/jf063271n
日期:2007.2.1
A series of pyrazolo[5,1-d][1,2,3,5]tetrazin-4(3H)one derivatives were designed, synthesized, and evaluated for their herbicidal activities where some of these compounds provided >80% control of Brassica campestris at 10 microg/mL. Quantitative structure-activity relationship studies were performed on these compounds using physicochemical parameters (electronic, Verloop, or hydrophobic) as independent
设计,合成了一系列吡唑并[5,1-d] [1,2,3,5] tetrazin-4(3H)one衍生物,并评估了它们的除草活性,其中某些化合物提供了> 80%的除草效果。甘蓝型油菜(Brassica campestris)为10微克/毫升。使用理化参数(电子,Verloop或疏水性)作为独立参数,以除草活性为依存参数对这些化合物进行定量构效关系研究,其中除草活性与这组化合物中的理化参数最佳相关(r> 0.8)分子。R1的摩尔折光率(MR),R2或R6的塔夫脱(Eso),R3或R5的Verloop(Lm)以及R4的电子参数(Hammett常数)主要影响对野菜双歧杆菌的除草活性。除草活性的最佳MR为0.95。E菜的除草活性主要与取代基的疏水参数有关。R1和R4除草活性的最佳pi参数分别为0.72和0.68。通常,这些化合物对野菜双歧杆菌显示的除草活性比克鲁斯大肠埃希菌更大。