Cytochalasins from a Daldinia sp. of fungus

Eleven new cytochalasins have been isolated from an unidentified Daldinia sp. of fungus. These were identified as 10 10-phenyl-(11)-cytochalasans and one 10-phenyl-22-oxa-(12)-cytochalasan. The latter metabolite is the first report of a 22-oxa-(12)-cytochalasan. Their structures were established by spectroscopic methods, in particular by high-field NMR spectroscopy.