Valentão, PatríciaAreias, Filipe M.Amaral, Joana S.Andrade, Paula B.Seabra, Rosa M.2011-06-072011-06-072000Valentão, P.; Areias, F.; Amaral, J.S.; Seabra, R. (2000). Tetraoxygenated xanthones from centaurium erythraea. Natural Product Letters. ISSN 1057-5634. p.319-3231057-5634http://hdl.handle.net/10198/5010Three tetraoxygenated xanthones, 1,6-dihydroxy-3,5-dimethoxyxanthone, 3-hydroxy-1,5,6-trimethoxyxanthone and 1,3,5-trihydroxy-2-methoxyxanthone, were isolated for the first time from the aerial parts of C. erythraea. Their structure were established by spectroscopic means and by comparison with literature references.engCentarium erythraea1,6-dihydroxy-3,5-dimethoxyxanthone3-hydroxy-1,5,6-trimethoxyxanthone1,3,5-trihydroxy-2-methoxyxanthonejournal article10.1080/10575630008043763