title: Chemical constituents of gentianaceae. Part 22. Structures of new 1,3,5-tri- and 1,3,5,6,7-penta-oxygenated xanthones of Canscora decussata Schult.
mesh_terms: D055598:Chemical Phenomena; D002621:Chemistry; D005960:Glucosides / Q000302:isolation & purification*; D006027:Glycosides / Q000302:isolation & purification*; D008722:Methods; D010946:Plants, Medicinal / Q000032:analysis*; D014966:Xanthenes / Q000302:isolation & purification*
chemical_list: D005960:Glucosides; D006027:Glycosides; D014966:Xanthenes