Abstract
In the United States there have been serious outbreaks of toxicosis among farm animals that have ingested moldy corn. The most toxic fungus frequently isolated from moldy corn in Wisconsin is Fusarium tricinctum of which there are many toxic strains. Among these, strain B-24 was originally chosen for growth in pure culture, and isolation of a crystalline toxin from it has been described. 1 At this point a much more toxic strain, T-2, became available and a crystalline toxin related to that from strain B-24 was isolated from it by a similar procedure. The B-24 toxin has been proved, by comparison of IR and PMR spectra and by mixed m.p. determination, to be identical with diacetoxyscirpenol (Ia), the principal toxic metabolite of Fusarium scirpi. 2–4 Results described below show that the T-2 toxin is 8α-(3-methyl-butyryloxy)4β,15-diactoxyscirp-9-en-3α-ol(Ib).
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