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The increasing demands for new lead compounds in pharmaceutical and agrochemical industries have driven scientists to search for new bioactive natural products. Marine microorganisms are rich sources of novel, bioactive secondary metabolites, and have attracted much attention of chemists, pharmacologists, and molecular biologists. This mini-review mainly focuses on macrolactins, a group of 24-membered lactone marine natural products, aiming at giving an overview on their sources, structures, biological activities, as well as their potential medical applications. 相似文献
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Mondol MA Kim JH Lee HS Lee YJ Shin HJ 《Bioorganic & medicinal chemistry letters》2011,21(12):3832-3835
Bioactivity-guided isolation for the new/novel metabolites from the EtOAc extract obtained from the culture broth of a marine Bacillus sp. 09ID194 followed by chromatographic fractionations and subsequently HPLC purifications led to the isolation of two known macrolides, macrolactins A (1) and Q (2), together with a new glycosylated marcrolide, macrolactin W (3). The chemical structures of compounds 1-3 were assigned based on extensive MS and NMR spectral data analysis and literature review. Compound 3 showed potent antibacterial activity against both Gram-positive and Gram-negative pathogenic bacteria. 相似文献
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