Studies on the Nepalese Crude Drugs. I. On the Flavonoid and Xanthone Constituents of the Plants of Swertia spp

Abstract

The flavonoid and xanthone constituents were examined in four kinds of Swertia spp., and the results are shown in Tab1e I. Two of these were new glycosides which were proved to be isovitexin-x" arabinoside (x"=3", 4", or 6") and norswertianin-1-glucoside, respectively.