Acids from blue-stain diseased lodgepole pine

Abstract

The wood of blue-stain diseased lodgepole pine has been examined for the presence of 2,3-dihydroxybenzoic acid and ceratenolone, compounds believed to be responsible, in the form of their ferric chelates, for the blue coloration of the diseased wood. These compounds were not detected. Dehydroabietic acid, 15-hydroxydehydroabietic acid, 7α- and 7β-hydroxydehydroabietic acid, and 7-oxodehydroabietic acid were isolated. The 1H and 13C nuclear magnetic resonance spectra and mass spectra of the above mentioned compounds are reported.