New phosphorhydrazide compounds (1–7, 13, 15–16) and thiophosphorhydrazide (14 and 17) were synthesized and characterized by 31P, 13C, 1H NMR and IR spectroscopy. Furthermore, the crystal structure of compound (C6H5NH)(C6H5O)P(O)(NH–NH2) (2) was investigated. The activities of derivatives on acetylcholinesterase (AChE) and urease were determined. Quantitative structure–activity relationship (QSAR) was used to understand the relationship between molecular structural features and inhibitory. DFT–QSAR models for enzymes demonstrated the importance of E LUMO parameter in describing the anti-AChE and anti-urease activities of the synthesized compounds. The correlation matrix of QSAR models and docking analysis confirmed that electrophilicity descriptor can control the influence of the polarizability properties of N–H functional group of PAH derivatives in the inhibition of enzymes.
合成并表征了新型
磷氢
肼化合物(1–7,13,15–16)和
硫磷氢
肼(14和17),采用31P、13C、1H核磁共振和红外光谱进行分析。此外,还研究了化合物(C6H5NH)(
C6H5O)P(O)(NH–NH2) (2)的晶体结构。测定了这些衍
生物对
乙酰胆碱酯酶(AChE)和
脲酶的活性。采用定量构效关系(Q
SAR)来理解分子结构特征与抑制活性之间的关系。针对酶的DFT–Q
SAR模型表明,E LUMO参数在描述合成化合物的抗AChE和抗
脲酶活性方面的重要性。Q
SAR模型的相关矩阵和分子对接分析确认了电亲和力描述符可以控制PAH衍
生物中N–H功能团的极化性特性对酶抑制的影响。