title: Tetraoxygenated naturally occurring xanthones.
abstract: This review, with 350 references, gives information on the chemical study of 234 naturally occurring tetraoxygenated xanthones in 12 families, 53 genus and 182 species of higher plants, and two which are described as fungal and lichen metabolites. The value of these groups of substances in connection with pharmacological activity and therapeutic use of some species is described. The structural formulas of 135 isolated compounds, and their distribution, are also given.
authors.affiliation: Departamento de Química, Universidade Federal de Viçosa, Minas Gerais, Brazil.
authors.forename: V
authors.initials: V
authors.lastname: Peres
authors.forename: T J
authors.initials: TJ
authors.lastname: Nagem
authors.forename: F F
authors.initials: FF
authors.lastname: de Oliveira
mesh_terms: D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry*; D014966:Xanthenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D044004:Xanthones
chemical_list: D014966:Xanthenes; D044004:Xanthones; C009689:xanthone; D010100:Oxygen