Pyrenophorol (1) and (–)-dihydropyrenophorin (3), two known macrodiolides, were isolated together with four new analogues (2, 4–6) and three ring-opened derivatives (7–9) from Phoma sp., an endophyticfungus isolated from Lycium intricatum from Gomera. The structures of the new compounds were elucidated by detailed spectroscopic analysis, comparison with reported data, and chemical interconversion