(–)-Terpestacin and L-tenuazonic acid, inducers of pigment and aerial mycelium formation by Fusarium culmorum JP 15

Surface cultures of Fusarium culmorum JP15 were found to respond to extracts of other fungi by enhanced production of orange-red fusarubin pigments and formation of aerial mycelium. Two inducers from strain Ulocladium sp. HKI 0226, the new (–)-terpestacin (1) and L-tenuazonic acid (2), were isolated. 1 inhibited syncytium formation by cells infected with respiratory syncytial virus (RSV).