Xylariphilone: a new azaphilone derivative from the seagrass-derived fungus Xylariales sp. PSU-ES163

<div><p>One new azaphilone derivative, named xylariphilone (<b>1</b>), along with 10 known compounds was isolated from the seagrass-derived fungus Xylariales sp. PSU-ES163. Their structures were elucidated on the basis of extensive spectroscopic analysis. The absolute and relative configurations of <b>1</b> were determined by circular dichroism spectroscopy and NOEDIFF data. The antimicrobial and cytotoxic activities of the isolated compounds were evaluated.</p></div