This paper describes the flavonoid constituents in Agathis australis from a wide geographic range and completes a comprehensive survey of the flavonoid chemistry/chemotaxonomy of New Zealand conifers begun in 1984. Flavonol 3-O-glycosides and biflavones of the cupressuflavone and agathisflavone types are shown to be the predominant flavonoids. NMR data for these biflavones with varying degrees of methylation are presented for the first time. The flavonoid profiles of A. australis and three other species of Agathis show a high level of uniformity, and in this respect are closely related.
chemotaxonomy, flavonoids, Agathis australis, Araucariaceae, biflavonoids, cupressuflavone, agathisflavone
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