1H and 13C NMR analysis of some trichothecenes.

1H and 13C NMR chemical shifts were determined from the NMR spectra of low concentration solutions of T-2 toxin, T-2 triol, HT-2 toxin, diacetoxyscirpenol, and neosolaniol. Isomerization of neosolaniol was observed to occur in chloroform solution. 1D and 2D 1H and 13C NMR techniques were used in order to determine the structure of the isomerization product, finally identified as 4 beta, 8 alpha-diacetoxy-3 alpha, 15-dihydroxy-12,13-epoxytrichothec-9-ene.