Quinoline-based promising anticancer and antibacterial agents, and some metabolic enzyme inhibitors.

Archiv der Pharmazie
Salih ÖktenIlhami Gulcin

Abstract

A series of substituted quinolines was screened for their antiproliferative, cytotoxic, antibacterial activities, DNA/protein binding affinity, and anticholinergic properties by using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide cell proliferation, lactate dehydrogenase cytotoxicity, and microdilution assays, the Wolfe-Shimmer equality method, the Ellman method, and the esterase assay, respectively. The results of the cytotoxic and anticancer activities of the compounds displayed that 6-bromotetrahydroquinoline (2), 6,8-dibromotetrahydroquinoline (3), 8-bromo-6-cyanoquinoline (10), 5-bromo-6,8-dimethoxyquinoline (12), the novel N-nitrated 6,8-dimethoxyquinoline (13), and 5,7-dibromo-8-hydroxyquinoline (17) showed a significant antiproliferative potency against the A549, HeLa, HT29, Hep3B, and MCF7 cancer cell lines (IC50  = 2-50 μg/ml) and low cytotoxicity (∼7-35%) as the controls, 5-fluorouracil and cisplatin. The compound-DNA linkages are hyperchromic or hypochromic, causing variations in their spectra. This situation shows that they can be bound to DNA with the groove-binding mode, with Kb value in the range of 2.0 × 103 -2.2 × 105  M-1 . Studies on human Gram(+) and Gram(-) pathogenic bacteria showed tha...Continue Reading

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Citations

Sep 25, 2020·Molecules : a Journal of Synthetic Chemistry and Natural Product Chemistry·Haythem A SaadehMohammad S Mubarak
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Nov 16, 2021·Journal of Medicinal Chemistry·Angélica Rocha JoaquimSaulo Fernandes de Andrade

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