Department of Chemistry, Institute of Basic Science, Khandari, Dr. Bhimrao Ambedkar University, Agra 282002, Uttar Pradesh, India.
Department of Chemistry, College of Science, King Saud University, Riyadh 11451, Saudi Arabia.
Molecules. 2023 Feb 24;28(5):2116. doi: 10.3390/molecules28052116.
For many decades, uracil has been an antineoplastic agent used in combination with tegafur to treat various human cancers, including breast, prostate, and liver cancer. Therefore, it is necessary to explore the molecular features of uracil and its derivatives. Herein, the molecule's 5-hydroxymethyluracil has been thoroughly characterized by NMR, UV-Vis, and FT-IR spectroscopy by means of experimental and theoretical analysis. Density functional theory (DFT) using the B3LYP method at 6-311++G(d,p) was computed to achieve the optimized geometric parameters of the molecule in the ground state. For further investigation and computation of the NLO, NBO, NHO analysis, and FMO, the improved geometrical parameters were utilized. The potential energy distribution was used to allocate the vibrational frequencies using the VEDA 4 program. The NBO study determined the relationship between the donor and acceptor. The molecule's charge distribution and reactive regions were highlighted using the MEP and Fukui functions. Maps of the hole and electron density distribution in the excited state were generated using the TD-DFT method and PCM solvent model in order to reveal electronic characteristics. The energies and diagrams for the lowest unoccupied molecular orbital (LUMO) and the highest occupied molecular orbital (HOMO) were also provided. The HOMO-LUMO band gap estimated the charge transport within the molecule. When examining the intermolecular interactions in 5-HMU, Hirshfeld surface analysis was used, and fingerprint plots were also produced. The molecular docking investigation involved docking 5-HMU with six different protein receptors. Molecular dynamic simulation has given a better idea of the binding of the ligand with protein.
几十年来,尿嘧啶一直是一种抗肿瘤药物,与替加氟联合用于治疗各种人类癌症,包括乳腺癌、前列腺癌和肝癌。因此,有必要探索尿嘧啶及其衍生物的分子特征。在此,通过实验和理论分析,利用 NMR、UV-Vis 和 FT-IR 光谱对该分子的 5-羟甲基尿嘧啶进行了彻底的表征。采用 B3LYP 方法在 6-311++G(d,p)水平上进行了密度泛函理论(DFT)计算,以获得分子在基态下的优化几何参数。为了进一步研究和计算 NLO、NBO、NHO 分析和 FMO,使用改进的几何参数。利用 VEDA 4 程序通过势能分布对振动频率进行分配。NBO 研究确定了供体和受体之间的关系。利用 MEP 和 Fukui 函数突出了分子的电荷分布和反应区域。通过 TD-DFT 方法和 PCM 溶剂模型生成激发态中孔和电子密度分布的映射,以揭示电子特性。还提供了最低未占据分子轨道(LUMO)和最高占据分子轨道(HOMO)的能量和图。HOMO-LUMO 带隙估计了分子内的电荷输运。在研究 5-HMU 中的分子间相互作用时,使用了 Hirshfeld 表面分析,并生成了指纹图。对 5-HMU 与六种不同蛋白质受体的分子对接研究涉及到。分子动力学模拟为配体与蛋白质的结合提供了更好的想法。