Structure elucidation of the janthitrems, novel tremorgenic mycotoxins from Penicillium janthinellum
Abstract
The assignment of the structures (1)–(3) to janthitrems E-G, tremorgenic mycotoxins isolated from cultures of Penicillium janthinellum is based on a detailed study of their highfield 1H and 13C n.m.r. spectra. In the structure elucidation extensive use was made of heteronuclear 13C-{1H} selective population inversion (SPI) and homonuclear 1H-{1H} n.O.e. experiments.