Chemistry of the Coccoidea. VI. Pigments of the lac insect Austrotachardia acaciae (Hemiptera): Chemistry and crystal structure

Abstract

Pigments of the Australian lacciferid, Austrotachardia acaciae Maskell, differ from those of Indian lac insects in that the major constituent is xantholaccaic acid B (9) rather than a mixture of laccaic acids. Its structure has been determined by single-crystal X-ray diffraction of a new hexamethyl derivative. Xantholaccaic acids have not previously been found in nature.