Search

A new isochroman derivative, erythro-2-methyl-5-hydroxyphenylpropane-7,8-diol ( 1), and three known compounds including of (4S)-4,8-dihydroxy-3,4-dihydro-1(2H)-naphthalen-1-one ( 2), (4S)-4,6,8-trihydroxy-3,4-dihydro-1(2H)-naphthalen-1-one ( 3), and chrysogeside D ( 4), were isolated from Microsphaeropsis arundinis. Compounds 3 and 4 were first found in Microsphaeropsis. The antibacterial, antiphytopathogenic, and antioxidant activities of these compounds were evaluated. Compounds 1 and 4 inhibited Alternaria tenuissima, a pathogenic fungus causing root rot of Panax notoginseng with MICs at 64 μg/mL, which showed the ecological function of the endophyte for its host plant. [ABSTRACT FROM AUTHOR]

A new isochroman, 6-hydroxy-3-methylisochroman-5-carboxylic acid, and six known compounds were isolated from the culture of marine-derived mangrove fungus 1893#. Their structures were elucidated by analysis of spectroscopic data. [ABSTRACT FROM AUTHOR]