使用电性距离矢量(Dt)描述10种对氟苯基三唑并嘧啶衍生物(FTPs)的化学结构,呈现良好的结构选择性。FTPs对小麦赤霉菌抑制活性(G)与Dt的令人满意的QSAR数学模型为:G_B=3.204(±0.098)+0.141(±0.034)D_7-6.686(±0.898)D_(67),R~2=0.914,R_(adj)~2=0.889,R~(cv)=0.495,F=36.985。经V_(IF)、R_(cv)~2、F等检验,该模型具有良好的稳健性及预测能力。根据进入此模型的D7、D67可知,影响对氟苯基三唑并嘧啶衍生物对小麦赤霉菌抑制活性的主要因素是分子的二维结构特征-S-,-O-,-N〈和-CH_3等结构碎片。
The electronegativity distance vector(Dt) was used to describe the chemical structures of 10 4-fluorophenyl-triazol-pyrimidin derivatives(FTPs),and Dtshow good structural selectivity for FTPs. A satisfactory quantitative structure-activity relationships(QSAR) between the bactericidal activity(G) of above compounds to Gibberella zeae along with the Mt is expressed as: GB= 3. 204(± 0. 098) + 0. 141(± 0. 034) D7-6. 686(± 0. 898) D_(67),R2= 0. 914,R_(adj)2= 0. 889,Rcv2= 0. 495,F =36. 985. Using VIF,R_(cv)2,F tests,the model possessed better predictability and robustness. D_7,D_(67) in the model shows that the main factor to affect the inhibition activity of triazol-thieno-pyrimidin derivatives is a two-dimensional structural characteristics of the molecular-S-,-O-,-N and-CH_3 structure fragments.