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Second-generation aryl isonitrile compounds targeting multidrug-resistant Staphylococcus aureus.


ABSTRACT: Antibiotic resistance remains a major global public health threat that requires sustained discovery of novel antibacterial agents with unexploited scaffolds. Structure-activity relationship of the first-generation aryl isonitrile compounds we synthesized led to an initial lead molecule that informed the synthesis of a second-generation of aryl isonitriles. From this new series of 20 compounds, three analogues inhibited growth of methicillin-resistant Staphylococcus aureus (MRSA) (from 1 to 4?µM) and were safe to human keratinocytes. Compound 19, with an additional isonitrile group exhibited improved activity against MRSA compared to the first-generation lead compound. This compound emerged as a candidate worthy of further investigation and further reinforced the importance of the isonitrile functionality in the compounds' anti-MRSA activity. In a murine skin wound model, 19 significantly reduced the burden of MRSA, similar to the antibiotic fusidic acid. In summary, 19 was identified as a new lead aryl isonitrile compound effective against MRSA.

SUBMITTER: Kyei-Baffour K 

PROVIDER: S-EPMC6556061 | biostudies-literature | 2019 May

REPOSITORIES: biostudies-literature

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Second-generation aryl isonitrile compounds targeting multidrug-resistant Staphylococcus aureus.

Kyei-Baffour Kwaku K   Mohammad Haroon H   Seleem Mohamed N MN   Dai Mingji M  

Bioorganic & medicinal chemistry 20190319 9


Antibiotic resistance remains a major global public health threat that requires sustained discovery of novel antibacterial agents with unexploited scaffolds. Structure-activity relationship of the first-generation aryl isonitrile compounds we synthesized led to an initial lead molecule that informed the synthesis of a second-generation of aryl isonitriles. From this new series of 20 compounds, three analogues inhibited growth of methicillin-resistant Staphylococcus aureus (MRSA) (from 1 to 4 µM)  ...[more]

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