Abstract
We report the total synthesis and configurational assignment of pargamicin A, a highly oxidized non-ribosomal peptide that potently inhibits the growth of drug-resistant bacteria. Our synthetic approach relies on late-stage piperazine ring formation and careful selection of condensation reagents to assemble the densely substituted hexapeptide backbone. This work enables the synthesis of pargamicin congeners for the development of structure-activity relationships and informs strategies to access other sterically congested piperazic acid-containing natural products.
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Supporting Information
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Detailed experimental procedures, characterization data for novel compounds, copies of RP-HPLC, HRMS, NMR spectra (PDF), and biological assay data.
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