Preprint Article Version 1 This version is not peer-reviewed

New Derivatives of Chalcones, Chromens and Stilbenoids, Complexed with Methyl-β-Cyclodextrin, Show Antioxidant Properties and Antibacterial Synergism with Antibiotics

Version 1 : Received: 8 November 2024 / Approved: 8 November 2024 / Online: 8 November 2024 (07:30:10 CET)

How to cite: Zlotnikov, I. D.; Krylov, S. S.; Belogurova, N. G.; Blinnikov, A. N.; Kalugin, V.; Kudryashova, E. V. New Derivatives of Chalcones, Chromens and Stilbenoids, Complexed with Methyl-β-Cyclodextrin, Show Antioxidant Properties and Antibacterial Synergism with Antibiotics. Preprints 2024, 2024110591. https://doi.org/10.20944/preprints202411.0591.v1 Zlotnikov, I. D.; Krylov, S. S.; Belogurova, N. G.; Blinnikov, A. N.; Kalugin, V.; Kudryashova, E. V. New Derivatives of Chalcones, Chromens and Stilbenoids, Complexed with Methyl-β-Cyclodextrin, Show Antioxidant Properties and Antibacterial Synergism with Antibiotics. Preprints 2024, 2024110591. https://doi.org/10.20944/preprints202411.0591.v1

Abstract

Cyclodextrins (CDs) are natural cyclic oligosaccharides with the ability to form inclusion complexes with various organic substances. In this paper, we investigate the potential of CD complex formation to enhance the antibacterial activity and antioxidant properties of poorly soluble bioactive agents, such as chalcones, chromenes, stilbenoids and xanthylium derivatives, serving as potential adjuvants, in comparison with standard antiseptics. The interaction of these potential adjuvants with the hydrophobic pocket of methyl-β-cyclodextrin (MCD) was confirmed using spectroscopic methods such as UV-vis, FTIR, and 1H NMR. These complexes, when used in combination with metronidazole, showed a synergy coefficient of 1.36 for chalcones, presumably, via efflux pump inhibition in bacterial cells. To explore the possibility to create theranostic formulation, we used fluorescent markers to visualize target cells, antiseptics to provide antibacterial activity, and natural bioactive agents as chalcones that act as adjuvants. Additionally, new antioxidant compounds were found such as Xanthylium derivative (R351) and 1-methyl-3-(2-amino-3-cyano-7-methoxychromene-4-yl)-pyridinium methanesulfate: the pronounced antioxidant properties of these substances are observed comparable to quercetin in the efficiency. Rhodamine 6G, gentian violet and Congo Red exhibit good antioxidant properties, although its activity is an order of magnitude lower than that of quercetin. However, they have remarkable potential due to their multifaceted nature, including the ability to visualize target cells. The most effective theranostic formulation is the combination of the main drug (metronidazole) + dye/fluorophore (methylene blue / rhodamine 6G) for visualization of target cells + adjuvant (chalcones or xanthylium derivatives) for antiinflammation effect. Formulation options using antiseptics are possible for local use. The presented formulas demonstrate therapeutic potential, allowing simultaneous visualization and therapeutic effect.

Keywords

Cyclodextrins; antibacterial activity; dyes; chalcones; stilbenoids; chromenes; optical methods; synergistic effects

Subject

Medicine and Pharmacology, Medicine and Pharmacology

Comments (0)

We encourage comments and feedback from a broad range of readers. See criteria for comments and our Diversity statement.

Leave a public comment
Send a private comment to the author(s)
* All users must log in before leaving a comment
Views 0
Downloads 0
Comments 0


×
Alerts
Notify me about updates to this article or when a peer-reviewed version is published.
We use cookies on our website to ensure you get the best experience.
Read more about our cookies here.