Trichothecenes are a group of chemically related sesquiterpenoids produced by fungi such as Fusarium, Trichothecium, Trichoderma, Myrothecium, Stachybotrye and others. Recently, several trichothecene compounds were isolated from a higher plant. In the present time, more than 60 kinds of the trichothecene are identified from the metabolites of fungi and plant or from the transformed products of these trichothecene, as reviewed in literature (Ueno, 1977a, 1977b, 1980, 1983).