Colouring Matters of Australian Plants. XVIII. Constituents of Anigozanthos rufus

Abstract

Four new phenylphenalenone pigments have been isolated from Anigozanthos rufus Labill. and their structures have been determined. The known compound 2-phenylnaphthalic anhydride was also isolated from the plant. The synthesis of one of the new pigments, and of some related compounds, is described.