Two novel cyclic depsipeptides Xenematides F and G from the entomopathogenic bacterium Xenorhabdus budapestensis


Two novel depsipeptides xenematides F and G (1, 2), were isolated from entomopathogenic Xenorhabdus budapestensis SN84 along with a known compound xenematide B. The structures of the two new molecules were elucidated using NMR, MS and Marfey’s method. The xenematide G (2) contains α-aminoheptanoic acid, a non-protein amino acid that is rarely found in secondary metabolites from entomopathogenic bacteria. Xenematides F and G were tested for antibacterial activity. Xenematide G (2) exhibited moderate antibacterial activity.

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This work are supported by Liaoning Province Fund for Nature (No. 01032017001), Shenyang Agricultural University Postdoctoral Fund (No. 770215012) and Shenyang Agricultural University Introducing Talent Fund (No. 880415016).

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Correspondence to Zhiguo Yu.

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Xi, X., Lu, X., Zhang, X. et al. Two novel cyclic depsipeptides Xenematides F and G from the entomopathogenic bacterium Xenorhabdus budapestensis. J Antibiot 72, 736–743 (2019).

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