Synthesis, characterization, DNA-Binding, enzyme inhibition and antioxidant studies of new N -methylated derivatives of pyridinium amine
| Autor: | Humera Rafique, Muhammad Sharif Akbar, Muhammad Faizan Nazar, Muhammad Naveed Zafar, Muhammad Tahir, Ehsan Ullah Mughal, Fouzia Perveen, Sabeen Zahra |
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| Rok vydání: | 2017 |
| Předmět: |
Antioxidant
010405 organic chemistry DPPH Stereochemistry medicine.medical_treatment Organic Chemistry 010402 general chemistry 01 natural sciences Medicinal chemistry Esterase Binding constant Fluorescence spectroscopy 0104 chemical sciences Analytical Chemistry Inorganic Chemistry chemistry.chemical_compound chemistry medicine Amine gas treating Pyridinium Trifluoromethanesulfonate Spectroscopy |
| Zdroj: | Journal of Molecular Structure. 1137:84-96 |
| ISSN: | 0022-2860 |
| DOI: | 10.1016/j.molstruc.2017.02.035 |
| Popis: | A series of novel N-methylated derivatives of pyridinium amine, [L1][Tf]-[L5][Tf], were synthesized and characterized by FTIR, NMR, MS and XRD analyses. Preliminary biological screening of these compounds including antioxidant, enzyme inhibition and DNA (salmon sperm) interaction studies were also carried out. The targeted compounds were synthesized by a melt reaction between 4-chloro-N-methyl pyridinium triflate and corresponding amines (1-naphthyl amine, o-ansidine, 2-nitroaniline, p-ansidine and cyclohexyl amine) at temperature of 230 °C. The DPPH radical antioxidant scavenging activities of these compounds at maximum concentration of 50 μg/mL were observed in the range of 60–70%. Acetylcholine esterase (AChE) and Butylcholine esterase (BChE) inhibitory activities of synthesized compounds at 2 mM concentration were also measured to be at maximum of 79 and 71% respectively. The spectral behavior of ligand-DNA obtained from photo-luminescent measurements showed that all ligands bind with DNA via non-covalent interactions. The binding constant values were determined by UV–visible and fluorescence spectroscopy and were quite close to that obtained from molecular docking studies. |
| Databáze: | OpenAIRE |
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