Fungal endophytes are a significant reservoir of novel bioactive secondary metabolites. Present communication describes isolation and structure determination of isochromenone, from endophytic microorganism <em>Aspergillus</em> <em>fumigatus</em> hosted in <em>Bacopa</em> <em>monnieri</em> plant. Further, its biological evaluation revealed it as antioxidant and antitubercular. The methanol extract of <em>A</em>. <em>fumigatus</em> inhibits the growth of the virulent strain of <em>Mycobacterium</em> <em>tuberculosis</em> H37RV with minimum inhibitory concentration 500 μg/mL. This is the first report of isolation of isochromenone from <em>A. fumigatus.</em>
真菌内生菌是新型生物活性次生代谢物的重要储库。本文介绍了从内生微生物Aspergillus fumigatus中分离和结构鉴定的异色酮,它寄生在Bacopa monnieri植物中。进一步的生物评价表明,它具有抗氧化和抗结核活性。A. fumigatus的甲醇提取物抑制了致病菌株Mycobacterium tuberculosis H37RV的生长,最小抑制浓度为500 μg/mL。这是从A. fumigatus中分离异色酮的首次报道。