Isolation of a New Tremorgenic Indologiterpene, 1'-O-Acetylpaxilline, from Emericella striata and Distribution of Paxilline in Emericella spp.

Abstract

The distribution of a tremorgenic mycotoxin, paxilline (1), was investigated in 19 species belonging to the genus Emericella. It was found that Emericella desertorum, E. foveolata, and E. striata produced paxilline (1). A new type of indoloditerpene, emindole DA (4), was also found in E. quadrilineata. A new tremorgenic indoloditerpene, 1'-O-acetylpaxilline (3), was isolated from the mycelium of E. striata. Its structure was established on the basis of spectroscopic investigations.