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Nagimycins A and B, Antibacterial Ansamycin-Related Macrolactams from sp. NA07423. | LitMetric
Chemical investigation of sp. NA07423 led to the discovery of two unreported macrolactams, nagimycins A () and B (). Their structures were elucidated by NMR, HRESIMS, X-ray crystallography, and comparison of experimental and theoretical ECD spectra. The nagimycins have a unique butenolide moiety rarely found in ansamycin antibiotics. Genome analysis revealed the putative biosynthetic gene cluster for nagimycins, and a likely biosynthetic pathway was proposed. Notably, compounds and exhibited potent antibacterial activity against two pathogenic bacteria.
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