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Abstract
Four new pyrone derivatives, fusaritricins A–D (1−4), together with five known analogues, were obtained from the kiwi endophytic fungus Fusarium tricinctum. Their structures were established by extensive spectroscopic data analysis and their absolute configurations were determined by quantum chemical calculations. Compounds 1, 2, 3, and 9 exhibited antibacterial activity against plant pathogen Pseudomonas syringae pv. Actinidiae (Psa) with MIC values of 128, 128, 64, and 64 µg/mL, respectively. This is the first report of anti-Psa activity of pyrone derivatives.
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