Metabolites of the higher fungi. Part 32.1 Rosnecatrone, a phytotoxic bicyclo[4.1.0]hept-3-en-2-one from the fungus Rosellinia necatrix Prill
Abstract
Rosnecatrone 7 is a phytotoxic )-propenyl]-7-oxabicyclo[4.1.0]hept-3-en-2-one by chemical and physical methods. The absolute configuration is determined and the X-ray structure of its borohydride reduced derivative, rosnecatrol 10 as the tetra-acetate is described.