Synthesis of a versatile Schiff base 4-((2-hydroxy-3,5-diiodobenzylidene)amino) benzenesulfonamide from 3,5-diiodosalicylaldehyde and sulfanilamide, structure, electronic properties, biological activity prediction and experimental antimicrobial properties

Elangovan, N.; Gangadharappa, Bhavya; Thomas, Renjith; Irfan, Ahmad

doi:10.1016/j.molstruc.2021.131700

Cited by 24 publications

(12 citation statements)

References 69 publications

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“…Titled compound C1 structure was optimized to DFT mode with WB97XD/6‐311 + G(2d,p) basis set level with assistance of Gaussian‐09 package. [ 21‐23 ] Before optimization, conformational analysis was performed and the most stable conformer was selected for the optimization. [ 12 ] The detailed bond angle, bond length and dihedral angles of the optimized structure is tabulated in table S1.…”

Section: Resultsmentioning

confidence: 99%

Quantum mechanical studies of 5‐amino‐2‐(6‐(2‐hydroxyethyl)‐3‐oxononyl) cyclohex‐2‐enone isolated from a marine algae

Begum,

Rao,

Rao

et al. 2022

Vietnam Journal of Chemistry

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The compound C1 from marine algae was isolated and characterized by FTIR, FT‐Raman and UV‐Vis, with compared to experimental and simulated methods. The compound optimized with DFT method with the WB97XD and 6‐311 + G(2d,p) basis set level. The infrared and Raman spectrum were calculated with same basis set level; the simulated spectrum good agreement with experimental one. The HOMO‐LUMO and MEP also calculated with above mentioned same basis set level; this study is mainly predicted to the biological activity of the titled compound C1. The wave function studies like localized orbital locator, electron localized function, average localized ionization energy and non‐covalent interaction also studied for another theoretical evidence of the titled compound. The ADMET properties are also studied for in this compound for the support of Swiss ADMET online tool. Molecular docking study showed a high binding affinity of ‐7.9 kcal/mol to act as a 5‐hydroxytryptamine release stimulant.

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Section: Resultsmentioning

confidence: 99%

Quantum mechanical studies of 5‐amino‐2‐(6‐(2‐hydroxyethyl)‐3‐oxononyl) cyclohex‐2‐enone isolated from a marine algae

Begum,

Rao,

Rao

et al. 2022

Vietnam Journal of Chemistry

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“…Consequently, due to the presence of purine (adenine and guanine) and pyrimidine (cytosine and thymine) moieties, the UV–Vis spectrum of the DNA displays a large peak at 260 nm. The content and purity of CT‐DNA were measured using the absorbance at that wavelength 30 . A constant concentration of compounds (HL and CuL 2 ) (20 μM) and a range of CT‐DNA concentrations (20–200 μM) were used in order to capture the absorption spectra.…”

Section: Methodsmentioning

confidence: 99%

Biophysical study on DNA and BSA binding activity of Cu(II) complex: Synthesis, molecular docking, cytotoxic activity, and theoretical approach

Tarai

Mandal

Tarai

et al. 2023

Applied Organom Chemis

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The bidentate (N, O) donor Schiff base, methyl‐4‐(2‐hydroxybenzylidene‐amino) benzoate (HL), was synthesized for the synthesis of CuL2 complex. Their structures were characterized by single crystal X‐ray diffraction and spectroscopic methods. The important structural features of ligand HL are (space group: Pca21; a = 6.1434(7) Å; b = 7.1021(7) Å; c = 28.963(3) Å; α = 90.00°; β = 90.00°, and γ = 90.00°) and of CuL2 are (space group: P21/n; a = 15.763(7) Å; b = 8.1921(5) Å, and c = 20.1955(8) Å; α = 90.00°; β = 96.547(4)°, and γ = 90.00°). The DFT/TD‐DFT studies were performed to evaluate the structure optimization, MEP plot, and electronic spectroscopy data as well as the HOMO‐LUMO energy and also other electronic descriptor properties. The DNA and BSA binding property of both the ligand and complex were studied employing a variety of spectroscopic methods, viscosity experiments, and gel electrophoresis technique. Their biophysical study including 3D fluorescence, FRET calculation, and anisotropy measurements with BSA were studied by spectrofluorometric methods. The molecular docking simulation of the ligand HL and CuL2 was executed with DNA and BSA to observe their different weak and strong binding interactions and to compare their binding aptitude with biomolecules and experimental results. The software “PASS” for drug likeness prediction and “ADMET” for bioactivity were implemented to get an idea about the antineoplastic and bioactivity aspects of HL and CuL2 complex. The anticancer property of the Cu(II) complex was measured by MTT assay against human breast carcinomas (MCF‐7) cancer cell line and as well as normal human embryonic kidney cells (HEK293) and is less toxic and comparable anticancer activity compared to cisplatin and oxaliplatin. The annexin V‐FITC, propidium iodide assay by flow cytometric method, and reactive oxygen species (ROS) production assay by DCFDA were assessed in presence of the HL and CuL2 for their cell death mechanism proceed via either apoptosis or necrosis.

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“…[37] The results elucidated that excellent biological activity corresponds to the biding site of structurally terminal region drives function of inhibitor of the system. [38,39]…”

Section: Molecular Dockingmentioning

confidence: 99%

Synthesis, structural elucidation, biological screening, and density functional theory calculations of Cu(II), Ni(II), Mn(II), and Co(II) complexes of 20 Z‐N‐((Z)‐2‐(6‐nitrobenzo[d]thiazol‐2‐ylimino)‐1,2‐diphenylethylidene)‐5‐nitrobenzo[d]thiazol‐2‐amine Schiff base ligand

Shekhar

Sharma

Okolie

et al. 2022

Applied Organom Chemis

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The emerging Schiff base‐derived metal complexes are the building blocks for biomedical applications. Herein, novel Schiff base N,N′‐[(1Z,2Z)‐1,2‐diphenylethane‐1,2‐diylidene]bis(6‐nitro‐1,3‐thiazol‐2‐amine) and corresponding Cu(II), Ni(II), Mn(II), and Co(II) metal complexes were successfully synthesized and characterized. The characterization of ligand and corresponding metal complexes was carried out by employing elemental analysis, 1H and 13C nuclear magnetic resonance (NMR) spectroscopy, mass spectroscopy, Fourier transform infrared spectroscopy (FTIR) analysis, molar conductance, magnetic susceptibility measurements, electronic spectra, electronic paramagnetic resonance (EPR) and density functional theory (DFT) studies. DFT calculations at B3LYP/6‐311+G** level of theory have been executed to examine the equilibrium geometry of the ligand and metal complexes. Furthermore, total energy, highest‐occupied molecular orbital (HOMO) and lowest‐unoccupied molecular orbital (LUMO), and Mulliken atomic charges were reckoned. Tetrahedral geometry was observed in the case of the Ni(II) complex, and octahedral geometries were discerned for Cu(II), Mn(II), and Co(II), complexes. Docking studies were performed against the newly synthesized analogs with the active site of Escherichia coli (PDB ID: 3t88), Staphylococcus aureus (PDB ID: 3q8u), Candida Albicans (PDB ID: 3qlw), and Aspergillus flavus (PDB ID: 4ynt) receptors to recognize the interactions between complexes and identify their probable binding sites. Synthesized analogs were examined for in vitro antimicrobial activity employing both minimum inhibitory concentration and disk diffusion method against the aforementioned pathogens. The result for these pathogens suggested metal compounds evince higher activity in comparison to the free ligand.

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Synthesis of a versatile Schiff base 4-((2-hydroxy-3,5-diiodobenzylidene)amino) benzenesulfonamide from 3,5-diiodosalicylaldehyde and sulfanilamide, structure, electronic properties, biological activity prediction and experimental antimicrobial properties

Cited by 24 publications

References 69 publications

Quantum mechanical studies of 5‐amino‐2‐(6‐(2‐hydroxyethyl)‐3‐oxononyl) cyclohex‐2‐enone isolated from a marine algae

Quantum mechanical studies of 5‐amino‐2‐(6‐(2‐hydroxyethyl)‐3‐oxononyl) cyclohex‐2‐enone isolated from a marine algae

Biophysical study on DNA and BSA binding activity of Cu(II) complex: Synthesis, molecular docking, cytotoxic activity, and theoretical approach

Synthesis, structural elucidation, biological screening, and density functional theory calculations of Cu(II), Ni(II), Mn(II), and Co(II) complexes of 20 Z‐N‐((Z)‐2‐(6‐nitrobenzo[d]thiazol‐2‐ylimino)‐1,2‐diphenylethylidene)‐5‐nitrobenzo[d]thiazol‐2‐amine Schiff base ligand

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