1. Density functional theory, molecular docking and bioassay studies on (S)-2-hydroxy-N-(2S,3S,4R,E)-1,3,4 trihydroxyicos-16-en-2-yl)tricosanamide
- Author
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Wajiha Liaqat, Muhammad Aurang Zeb, Tariq Mahmood, Riaz Hussain, Taj Ur Rahman, Khurshid Ayub, Muhammad Sajid, De-Bing Pu, and Wei-Lie Xiao
- Subjects
0301 basic medicine ,Organic chemistry ,Indigofera heterantha ,Dihedral angle ,Article ,Theoretical chemistry ,03 medical and health sciences ,0302 clinical medicine ,Computational chemistry ,Natural product chemistry ,lcsh:Social sciences (General) ,lcsh:Science (General) ,Conformational isomerism ,Basis set ,Multidisciplinary ,biology ,Chemistry ,Chemical shift ,biology.organism_classification ,030104 developmental biology ,Molecular docking ,Density functional theory ,lcsh:H1-99 ,Ionization energy ,Electronic and spectroscopic properties ,030217 neurology & neurosurgery ,lcsh:Q1-390 - Abstract
A novel indigoferamide-A, earlier isolated from the seeds of Indigofera heterantha Wall was characterized using density functional theory, molecular docking and bioassays studies. Density functional theory calculations were performed at B3LYP/6-31G(d,p) to gain geometric insight of the compound. Conformational analyses have been performed around three important dihedral angles to explore the lowest energy structure and conformer. The simulated vibrational spectrum of the compound at B3LYP/6-31G(d,p) was scaled with two scaling factors, and the scaled harmonic vibrations shows nice correlation with the experimental values. 1H and 13C NMR chemical shifts were calculated using Cramer's re-parameterized function W04 at 6- 31G(d,p) basis set. Several conformers lying within 2 kcal mol−1 of the minimum energy conformer were considered; however, the chemical shifts were not significantly different among these conformers. The Gaussian averaged theoretical 1H and 13C chemical shifts correlate nicely with the experimental data. Electronic properties such as band gap, ionization potential and electron affinities were also simulated for the first time, however, no comparison could be made with the experiment. The compound was also screened for urease, antiglycation activities and the theoretical explanation of the results is provided based on molecular docking simulations.
- Published
- 2019