Abstract
From the heartwood of Nothofagus fusca were isolated taxifolin, catechin, aromadendrin, quercetin, kaempferol, naringenin, ellagic acid, gallic acid, resveratrol, 3,3′-di- O-methyl ellagic acid and a compound “nothofagin” with properties consistent with those of a mono-C-glycoside of 4,2′,4′,6′-tetrahydroxy-dihydrochalcone. Another compound “konnanin” appears to be a C-glycoside of 3,4,2′,4′,6′-pentahydroxy-dihydrochalcone. Afzelechin, epicatechin, protocatechuic acid, p-hydroxybenzoic acid and phloroglucinol have been identified chromatographically. The possible taxonomic significance of the dimethyl ellagic acid is discussed. Spectral and chromatographic properties of the known dihydrochalcones are described.
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