Illudin

Illudin is a sesquiterpene and antitumor antibiotic produced by some mushrooms. In its isolated form, illudin shows selective toxicity for myelocytic leukemia and other carcinoma cells.

Illudin is highly toxic, with little apparent therapeutic value in its natural form. It is responsible for the ill effects of Jack O'Lantern mushroom (Omphalotus olearius) consumption.