1. Laurentixanthones A and B, Antimicrobial Xanthones from Vismia laurentii
- Author
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Bernard Bodo, Jean Robert Nguemeving, Victor Kuete, Alain Blond, Véronique Penlap Beng, Nono Nono Eric Carly, Anatole Guy Blaise Azebaze, Michele Meyer, Augustin Ephrem Nkengfack, Laboratoire de chimie et biochimie des substances naturelles, and Muséum national d'Histoire naturelle (MNHN)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
Magnetic Resonance Spectroscopy ,Antimicrobial activities ,Stereochemistry ,Xanthones ,MESH: Anti-Infective Agents ,MESH: Molecular Structure ,Friedelin ,Diol ,Anthraquinones ,Plant Science ,Horticulture ,Gram-Positive Bacteria ,Biochemistry ,Vismia laurentii ,MESH: Gram-Positive Bacteria ,Xanthone Derivatives ,chemistry.chemical_compound ,Anti-Infective Agents ,Clusiaceae ,MESH: Gram-Negative Bacteria ,Xanthone ,Gram-Negative Bacteria ,[SDV.BBM]Life Sciences [q-bio]/Biochemistry, Molecular Biology ,Molecular Biology ,Stigmasterol ,Vismia ,Molecular Structure ,biology ,MESH: Magnetic Resonance Spectroscopy ,MESH: Xanthones ,General Medicine ,Antimicrobial ,biology.organism_classification ,Guttiferae ,MESH: Clusiaceae ,MESH: Xanthenes ,Xanthenes ,chemistry ,Phytochemical ,Kaempferol - Abstract
International audience; A phytochemical investigation of the constituents of the roots of Vismia laurentii has resulted in the isolation of two xanthone derivatives named laurentixanthone A (1) (6-hydroxy-3,3-dimethyl-11-(3-methylbut-2-enyl)pyrano[2,3-c]xanthen-7(3H)-one) and laurentixanthone B (2) (1-hydroxy-5,6,7,8-tetramethoxyxanthone), along with 11 known compounds: 1,7-dihydroxyxanthone, vismiaquinone, vismiaquinone B, bivismiaquinone, 3-geranyloxy-6-methyl-1,8-dihydroxyanthraquinone, O(1)-demethyl-3',4'-deoxypsorospermin-3',4'-diol, 6-deoxyisojacareubin, 1,8-dihydroxy-6-methoxy-3-methylanthraquinone, kaempferol, friedelin and stigmasterol. The structures of compounds were established by means of spectroscopic methods. Furthermore, the compounds were screened for antimicrobial activities in vitro.
- Published
- 2006