Transforming Naphthoquinones: A Fresh Look at Antibacterial Organoseleniums

Scientists have discovered a new and practical way to make 2-selenylated-1, 4-naphthoquinones, which are compounds that combine redox motifs. They found that using a simple reducing agent like sodium borohydride at room temperature works well. This method produced several different types of these compounds in decent amounts, and they were tested using different techniques like NMR, cyclic voltammetry, and mass spectrometry. The compounds were also studied under light to see how well they could be functionalized after their synthesis. Some of these compounds showed interesting interactions between selenium and nitrogen atoms within the molecule, observed through solid-state X-ray diffraction (SC-XRD).

Researchers also looked at how these compounds behave in different light situations, conducting various photophysical studies. Furthermore, these organoseleniums were tested for their antibacterial properties. One of them, 5d, showed excellent potential against a strain of bacteria called S. aureus, with an impressively low minimum inhibitory concentration (MIC) of 0. 5 µg/mL. It was also effective against other types of S. aureus and Enterococcus faecium, including those resistant to common antibiotics like vancomycin and meropenem. This compound's good performance might be due to the combination of oxidant properties from the quinone part and antioxidant properties from the selenium part.

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