An investigation of two species of Nuxia (Buddlejaceae) showed that this genus is characterised by the presence of the eight-carbon iridoid glucoside unedoside and/or its derivatives. From N. floribunda was isolated unedoside, nuxioside (6-O-a-L-rhamnopyranosyl-unedoside) and 2''-acetyl-3''-cinnamoyl-nuxioside, while from N. oppositifolia was obtained 2''-acetyl-3''-benzoyl-nuxioside. Verbascoside was isolated from both plants. The biosynthesis of unedoside in N. floribunda was investigated and deoxyloganic acid was shown to be a precursor. The taxonomic position of Nuxia and Buddlejaceae is discussed.
|Title of host publication||Studies in Plant Science 6. Advances in Plant Glycosides, Chemistry & Biology|
|Publication status||Published - 1999|