Studies on the Constituents of Medicinal Plants in Hokkaido. I. On the Whole Herb of Swertia tetrapetala PALL. (1)

Abstract

From the methanol extract of the whole herb of Swertia tetrapetala PALL. (Gentianaceae), were isolated 1, 8-dihydroxy-3, 5-dimethoxyxanthone, 1-hydroxy-2, 3, 5-trimethoxyxanthone, 1-hydroxy-2, 3, 4, 7-tetramethoxyxanthone, luteolin, luteolin-7-o-glucoside and a bitter principle, swertiamarin. 1-Hydroxy-2, 3, 5-trimethoxyxanthone was found at first time in this plant among the Genus Swertia. Isolated xanthones suggest that this plant might be related with the Genus Frasera.