Showing papers on "Swertia published in 1986"

Studies on the constituents of Formosan gentianaceous plants. Part VII. Constituents of Swertia randaiensis Hayata and pharmacological activity of norswertianolin.

Abstract: Bellidifolin (XI) was first isolated from the fresh whole plant of Swertia randaiensis Hayata (Gentianaceae). Further, oleanolic acid, a constituent of this plant, reported by Wu et al, wasreinvestigated by C NMR spectroscopy, being revised into ursolic acid. Pharmacological studies on the xanthone glycoside, norswerianolin, which was previously isolated from this plant, showed that it posseses a depressant activity on the central nervous system.