Structure Reassignment of the Fungal Metabolite TAEMC161 as the Phytotoxin Viridiol

Two-dimensional NMR analyses including HMBC, NOESY, and ROESY as well as 1D NOE experiments led to a reassignment of the structure of the recently identified Trichoderma hamatum metabolite TAEMC161 (1) as the previously known viridiol (2). In addition, GIAO-calculated (13)C NMR chemical shifts of 1 and 2 provided strong support for the revised structure.