Synthesis and 3D-QSARs Analyses of Herbicidal O,O-Dialkyl-1-phenoxyacetoxy-1-methylphosphonate Analogues as a New Class of Potent Inhibitors of Pyruvate Dehydrogenase
作者:Min-Gyu Soung、Tae-Yeon Hwang、Nack-Do Sung
DOI:10.5012/bkcs.2010.31.5.1361
日期:2010.5.20
A series of O,O-dialkyl-1-phenoxyacetoxy-1-methylphosphonate analogues (1~22) as a new class of potent inhibitors of pyruvate dehydrogenase were synthesized and 3D-QSARs (three dimensional qantitative structure-activity relationships) models on the pre-emergency herbicidal activity against the seed of cucumber (Cucumus Sativa L.) were derived and discussed quantitatively using comparative molecular field analysis (CoMFA) and comparative molecular similarity indeces analysis (CoMSIA) methods. The statistical values of CoMSIA models were better predictability and fitness than those of CoMFA models. The inhibitory activities according to the optimized CoMSIA model I were dependent on the electrostatic field (41.4%), the H-bond acceptor field (26.0%), the hydrophobic field (20.8%) and the steric field (11.7%). And also, it was found that the optimized CoMSIA model I with the sensitivity to the perturbation ($d_q^2'}}/dr^2_yy'}}$ = 0.830) and the prediction ($q^2$ = 0.503) produced by a progressive scrambling analyses were not dependent on chance correlation. From the results of graphical analyses on the contour maps with the optimized CoMSIA model I, it is expected that the structural distinctions and descriptors that subscribe to herbicidal activities will be able to apply new an herbicide design.
合成了一系列 O,O-二烷基-1-苯氧基乙酰氧基-1-甲基膦酸盐类似物(1~22),它们是一类新型的丙酮酸脱氢酶强效抑制剂,并利用比较分子场分析法(CoMFA)和比较分子相似性分析法(CoMSIA)对其对黄瓜(Cucumus Sativa L. )种子的萌发前除草活性进行了三维-QSARs(三维定量结构-活性关系)模型的推导和定量讨论。利用分子场比较分析法(CoMFA)和分子相似性比较分析法(CoMSIA),对黄瓜种子除草活性的三维定量结构-活性关系模型进行了推导和定量讨论。与 CoMFA 模型相比,CoMSIA 模型的统计值具有更好的预测性和适宜性。优化的 CoMSIA 模型 I 的抑菌活性取决于静电场(41.4%)、H 键受体场(26.0%)、疏水场(20.8%)和立体场(11.7%)。同时还发现,优化后的 CoMSIA 模型 I 对扰动的灵敏度($d_q^2'}/dr^2_yy'}}$ = 0.830)和渐进扰动分析产生的预测值($q^2$ = 0.503)不依赖于偶然相关性。从使用优化的 CoMSIA 模型 I 对等值线图进行图形分析的结果来看,除草活性的结构区别和描述符有望应用于新的除草剂设计中。