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Antimicrobial Activity of Chalcones with a Chlorine Atom and Their Glycosides

Overview
Journal Int J Mol Sci
Publisher MDPI
Date 2024 Sep 14
PMID 39273666
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Abstract

Chalcones, secondary plant metabolites, exhibit various biological properties. The introduction of a chlorine and a glucosyl substituent to the chalcone could enhance its bioactivity and bioavailability. Such compounds can be obtained through a combination of chemical and biotechnological methods. Therefore, 4-chloro-2'-hydroxychalcone and 5'-chloro-2'-hydroxychalcone were obtained by synthesis and then glycosylated in two filamentous fungi strains cultures, i.e., KCH J2 and KCH J1.5. The main site of the glycosylation of both compounds by KCH J2 was C-2' and C-3 when the second strain was utilized. The pharmacokinetics of these compounds were predicted using chemoinformatics tools. Furthermore, antimicrobial activity tests were performed. Compounds significantly inhibited the growth of the bacteria strains 10536, DSM 799, and yeast DSM 1386. Nevertheless, the bacterial strain DSM 939 exhibited significant resistance to their effects. The growth of lactic acid bacteria strain KBiMZ 01 bacteria was moderately inhibited, but strains GG and KBM-1 were completely inhibited. In summary, chalcones substituted with a chlorine demonstrated greater efficacy in inhibiting the microbial strains under examination compared to 2'-hydroxychalcone, while aglycones and their glycosides exhibited similar effectiveness.

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