5,7,3′-Trihydroxy-6,8-di-C-methyl-4′,5′-dimethoxyflavanone from Alluaudiopsis marnieriana

From bark and spines of Alluaudiopsis marnieriana, a novel flavanone has been isolated and identified as 5,7,3′-trihydroxy-6,8-di-C-methyl-4′,5′-dimethoxyflavanone by UV, ¹H NMR and mass spectroscopy.     

Contribution Biochimique à la Systématique de l''Ordre des centrospermales

A chemosystematic survey of flavonoids have been made in 55 centrospermous species. On the basis of both the experimental results and published data, the evolutionary significance of distribution patterns of proanthocyanidins, anthocyanidins, C-glycoflavones, flavonols and flavones is discussed. The Nyctaginaceae and Didiereaceae appear to be particularly primitive families, while Caryophyllaceae, Aizoaceae, Cactaceae, Amaranthaceae and Chenopodiaceae are the most advanced of the order.