Results 101 to 110 of about 280 (121)

Extractives from guttiferae. Part III. The isolation and structure of symphoxanthone and globuxanthone from Symphonia globulifera L.

Journal of the Chemical Society C, Organic, 1966
Structures have been assigned to two new 1,1-dimethylallylxanthones, named symphoxanthone, and globuxanthone.
H D Locksley, F Scheinmann
exaly   +2 more sources

Symphonia Studies. Part 2. Globulixanthones C, D and E: Three Prenylated Xanthones with Antimicrobial Properties from the Root Bark of Symphonia globulifera.

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
Augustin E. Nkengfack, Pierre Mkounga, Michele Meyer, Zacharias T. Fomum, Bernard Bodo   +4 more
openaire   +1 more source

Extractives from guttiferae. Part IV. Isolation and structure of ugaxanthone and mbarraxanthone from Symphonia globulifera L.

Journal of the Chemical Society C, Organic, 1966
Two xanthones isolated from Symphonia globulifera L. have been named ugaxanthone and mbarraxanthone and shown to be 4-(3,3-dimethylallyl)-1,3,5,6-tetrahydroxyxanthone(Ia) and 4-(3,3-dimethylallyl)-1,3,7-trihydroxyxanthone (IVa). The synthesis of mbarraxanthone dimethyl ether (IVb) is reported.
H D Locksley, F Scheinmann
exaly   +2 more sources

Low Interannual Variation of Mating System and Gene Flow of Symphonia globulifera in the Brazilian Amazon

Biotropica, 2007
ABSTRACTSix microsatellite loci were used to compare the mating system and gene flow in two consecutive years of a natural, unlogged population of Symphonia globulifera in a 500 ha experimental plot in the Brazilian Amazon (Flona Tapajós). The species had a low density of reproductive trees per hectare (d= 0.46 trees/ha).
Francimary Da Silva Carneiro, Alexandre Magno Sebbenn, Milton Kanashiro, Bernd Degen   +3 more
openaire   +1 more source

Anti-onchocerca activity, toxicity and induced biochemical changes of Allanblackia floribunda and Symphonia globulifera stem bark methanolic extracts in mice

Journal of Parasitic Diseases
Human onchocerciasis has devastating pathological effects and the control relies on community directed treatment with ivermectin. However, ivermectin is only microfilaricidal and threatened by potential resistance in the parasite among other limitations.
Moses Njutain Ngemenya
exaly   +3 more sources

The guttiferones, HIV-inhibitory benzophenones from Symphonia globulifera, Garcinia livingstonei, Garcinia ovalifolia and Clusia rosea

Tetrahedron, 1992
Abstract Extracts from species of the tropical plant genera Symphonia , Garcinia and Clusia (Guttiferae) have yielded a series of new polyisoprenylated benzophenone derivatives named guttiferones A–E (1–5). Structural assignments were based on detailed spectral analysis. These compounds inhibit the cytophatic effects of in vitro
Kirk R. Gustafson, John W. Blunt, Murray H.G. Munro, Richard W. Fuller, Tawnya C. McKee, John H. Cardellina, James B. McMahon, Gordon M. Cragg, Michael R. Boyd   +8 more
openaire   +1 more source

High levels of pollen dispersal detected through paternity analysis from a continuous Symphonia globulifera population in the Brazilian Amazon

Forest Ecology and Management, 2009
Abstract In this study, six highly polymorphic microsatellite loci and a categorical paternity analysis approach were used to investigate the contemporary pollen gene flow in the neotropical tree species Symphonia globulifera . Data for this study were taken from a 500 ha experimental plot in a dense terra firme forest in the Eastern Brazilian ...
Francimary da Silva Carneiro, Bernd Degen, Milton Kanashiro, Andre Eduardo Biscaia de Lacerda, Alexandre Magno Sebbenn   +4 more
openaire   +1 more source

Constituents of the Stem Bark of Symphonia globulifera Linn. f. with Antileishmanial and Antibacterial Activities

Molecules, 2023
Billy Toussie Tchegnitegni, Yannick Stéphane Fotsing Fongang, Jean Jules Kezetas Bankeu   +2 more
exaly  

Biotransformation of guttiferones, Symphonia globulifera metabolites, by Bipolaris cactivora, an endophytic fungus isolated from its leaves

Organic and Biomolecular Chemistry, 2021
Kevin Cottet, Yann Fromentin, Marie-Christine Lallemand   +2 more
exaly  

A prenylated xanthone with antimicrobial activity from the seeds of Symphonia Globulifera

Natural Product Research, 2005
Silvere Ngouela, Bruno Lenta Ndjakou
exaly