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  • Title: Trichopeptides A and B, trichocyclodipeptides A-C, new peptides from the ascomycete fungus Stagonospora trichophoricola.
    Author: Chen Z, Xu X, Ren J, Wang W, Liu X, Li E.
    Journal: J Antibiot (Tokyo); 2017 Aug; 70(9):923-928. PubMed ID: 28676717.
    Abstract:
    Trichopeptides A (1) and B (2), new linear tetrapeptide and tripeptide, respectively, and three new diketopiperazines trichocyclodipeptides A-C (3-5) were isolated from the fermentation of the ascomycete fungus Stagonospora trichophoricola, a fungus isolated from the soil sample surrounding the fruiting body of Ophiocordyceps sinensis in Maqin Country, Qinghai Province, People's Republic of China. Their structures were primarily elucidated by interpretation of NMR and MS experiments. The absolute configurations of 1-5 were assigned through Marfey's method on their acid hydrolyzates. Compound 3 showed antifungal activity against Candida albicans with the IC50 and MIC values of 22 and 90 μg ml-1, respectively.
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