A new xanthone as a chemical marker of four Polygala species (Polygalaceae)

作者：Tizziani Tiago; Pereira Marcos; Venzke Dalila; Missau Fabiana Cristina; Ruani Ana Paula; Montagner Daiane Fiuza; Pizzolatti Moacir Geraldo; Micke Gustavo Amadeu; Costa Brighente Ines Maria

来源：Biochemical Systematics and Ecology, 2018, 78: 46-48.

DOI：10.1016/j.bse.2018.03.007

• Polygalaceae
• Polygala campestris
• Polygala densiracemosa
• Polygala linoides
• Polygala pulchella
• Xanthones
• Chemical markers

A new xanthone, 1,5-dihydroxy-2,3-methylenedioxyxanthone (1), was isolated from four species of Polygala (Polygala campestris, Polygala densiracemosa, Polygala linoides and Polygala pulchella). In addition, three other xanthones and one sterol were isolated from extracts of these species: 1,5-dihydroxy-2,3-dimethoxyxanthone (2), 1,5 dihydroxy-3-methoxyxanthone (3), 1,5-dihydroxy-6',6'dimethylpyrano[2',3':3,2]xanthone (4) and alpha-spinasterol (5). The xanthone 1 is new in the literature and although the others are known compounds this is the first time they have been isolated from these species. The chemotaxonomic significance of these data for the Polygala genus is reported.

• 出版日期2018-6