TWO XANTHONE GLUCOSIDES FROM HALENIA ELLIPTICA

Article abstract of DOI:10.1016/S0031-9422(00)98097-X

Two new xanthone-O-glucosides, 2,3,7-trimethoxyxanthone-1-O-glucoside and 2,3,5-trimethoxyxanthone-1-O-glucoside were isolated from whole plant of Halenia elliptica and identified through their acetates.Also present are four free xanthones, 1-hydroxy-2,3,4,7-tetramethoxy, 1-hydroxy-2,3,4,5-tetramethoxy, 1-hydroxy-2,3,7-trimethoxy, and 1-hydroxy-2,3,5-trimethoxyxanthone, oleanolic acid and sitosterol glucoside.A fraction rich in xanthone glucosides showed marked antiamoebic activity.Key Word Index - Halenia elliptica; Gentianaceae; pentaoxygenated xanthones; tetraoxygenated xanthones; xanthone glucosides; amoebicidal activity.