Novel oxabicyclo[2.2.1]heptane-3-one derivatives with NO inhibitory and cytotoxic activities, and xanthone derivatives from the endolichenic fungus Exophiala sp. - Cho H; Kim SJ; Choi YJ; Ji S; Lee JW; Hur JS; Kang KS; Shim SH (Bioorganic chemistry, 2025)