Synthesis and Crystal Structure of New Temephos Analogues as Cholinesterase Inhibitor: Molecular Docking, QSAR Study, and Hydrogen Bonding Analysis of Solid State
作者:Khodayar Gholivand、Ali Asghar Ebrahimi Valmoozi、Mahyar Bonsaii
DOI:10.1021/jf5011726
日期:2014.6.25
series of temephos (Tem) derivatives were synthesized and characterized by 31P, 13C, and 1H NMR and FT-IR spectral techniques. Also, the crystal structure of compound 9 was investigated. The hydrogen bonding energies (E2) were calculated by NBO analysis of the crystal cluster. The activities and the mixed-type mechanism of Tem derivatives were evaluated using the modified Ellman’s and Lineweaver–Burk’s
合成了一系列的temephos(Tem)衍生物,并通过31 P,13 C和1 H NMR和FT-IR光谱技术进行了表征。另外,研究了化合物9的晶体结构。通过晶体簇的NBO分析计算氢键能(E 2)。使用改良的Ellman法和Lineweaver-Burk法对胆碱酯酶(ChE)酶评估了Tem衍生物的活性和混合型机制。具有P═S部分的Tem衍生物的抑制活性高于具有P═O部分的Tem衍生物的抑制活性。对接分析显示氢键发生在OR(R = CH 3和C 2 H5)所选化合物的氧原子和N–H氮原子以及ChEs的受体位点(GLN和GLU)。PCA–QSAR表明,与结构描述符相比,电子变量的相关系数占主导地位。MLR-QSAR模型阐明,氮和磷原子的净电荷在抑制ChEs中起重要的电子功能。通过训练和测试集之间的q 2 = 0.965的LOO交叉验证方法,证实了QSAR模型的有效性。