Four New Phenones from the Cortexes of Polygala tenuifolia
- 1 January 2005
- journal article
- Published by Pharmaceutical Society of Japan in CHEMICAL & PHARMACEUTICAL BULLETIN
- Vol. 53 (9), 1164-1166
- https://doi.org/10.1248/cpb.53.1164
Abstract
From the 95% EtOH extract of the cortexes of Polygala tenuifolia, four new phenones and three known xanthones were isolated. The structures of the four new phenones were identified as 4-O-[α-L-rhamnopyranosyl-(1→2)-β-D-glucopyranosyl]-2-hydroxyl-6-methoxybenzophenone (tenuiphenone A, 1), 3,5-di-C-β-glucopyranosyl-2,4,6,3′-tetrahydroxybenzophenone (tenuiphenone B, 2), 2′,4′,6′-trihydroxyphenyl-(24Z)-triacontene-1-one (tenuiphenone C, 3), 2′,4′,6′-trihydroxyphenyl-(26Z)-dotriacontene-1-one (tenuiphenone D, 4) respectively, on the basis of spectroscopic analyses. The isolation of 1 and 2 supplied an evidence for the hypothesis that xanthone was biosynthesized from benzophenone in the plants.Keywords
This publication has 15 references indexed in Scilit:
- Xanthone O-glycosides from Polygala tenuifoliaPhytochemistry, 2002
- Polyphenolic Glycosides and Oligosaccharide Multiesters from the Roots of Polygala dalmaisianaJournal of Natural Products, 2002
- 3′,5′-Di-C-β-glucopyranosylphloretin, a flavonoid characteristic of the genus FortunellaPhytochemistry, 2001
- Benzophenone C-Glucosides from Polygala telephioides.CHEMICAL & PHARMACEUTICAL BULLETIN, 2000
- Xanthones from Polygala tenuifoliaPhytochemistry, 1992
- Tenuifolioses A-F, oligosaccharide multi-esters from the roots of Polygala tenuifolia WILLD.CHEMICAL & PHARMACEUTICAL BULLETIN, 1991
- Four New Phenolic Glycosides from Polygala tenuifolia.CHEMICAL & PHARMACEUTICAL BULLETIN, 1991
- Two xanthones from Polygala tenuifoliaPhytochemistry, 1991
- Studies on the constituents of the root of Polygala tenuifolia Willdenow. II. On the structures of onjisaponins A, B and E.CHEMICAL & PHARMACEUTICAL BULLETIN, 1982
- 13C nmr study of α- and β-anomeric pairs of d-mannopyranosides and l-rhamnopyranosidesTetrahedron, 1979