Chemical Constituents of the Endophytic Fungus Phomopsis sp. A240 Isolated from Taxus chinensis var. mairei

A new sesquiterpene, eremophil‐9‐ene‐11,12,13‐triol (1), a new oxazole, 4‐(2‐hydroxyethyl)‐5‐methyloxazole (2), and the two known lactones, 5′‐hydroxyalternariol (3) and alternariol (4), were isolated from the extract of Phomopsis sp. A240, an endophytic fungus isolated from the bark of Taxus chinensis var. mairei. The structures of the isolated compounds were determined by analyses of their spectroscopic data, as well as by comparison with literature reports. The isolated compounds were evaluated for their cytotoxic and antioxidant activities.