| Abstract
| - A new antimicrobial metabolite, named colletotric acid (1), was isolated from a liquid culture ofColletotrichum gloeosporioides, an endophytic fungus colonized inside the stem of Artemisia mongolica.The structure was determined using spectroscopic methods (EIMS and FABMS,H and 13C NMR, 1H−1H COSY, HMBC, and HMQC). Compound 1 inhibited the growth of Bacillus subtilis, Staphylococcusaureus, and Sarcina lutea with minimal inhibitory concentrations (MICs) of 25, 50, and 50 μg/mL,respectively, and the crop pathogenic fungus Helminthosporium sativum (MIC: 50 μg/mL).
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