Results 151 to 160 of about 1,244 (182)

Naturally Occurring Xanthones and Their Biological Implications. [PDF]

Molecules
Oriola AO, Kar P.
europepmc   +1 more source

Past Fire and Vegetation Change in the Hyperdiverse Forests of the Ecuadorian Amazon. [PDF]

Plants (Basel)
Heijink BM, Zwarts A, Witteveen NH, Watson J, Ebbenhorst A, Veenman F, Kessel M, León-Yánez S, Guevara-Andino JE, Endara MJ, Rivas-Torres G, Bush MB, McMichael CNH.   +12 more
europepmc   +1 more source

Anthraquinones from Vismia mexicana

Zeitschrift Fur Naturforschung - Section C Journal of Biosciences, 2014
Vismia mexicana (Clusiaceae) is a small tropical tree found from Mexico to Honduras. The CH2Cl2=MeOH extract from the leaves has been reported to have inhibitory properties against reverse transcriptase of human immunodeficiency virus type 1 (HIV-1 RT).
Antonio Nieto-Camacho, Simon Hernandez-Ortega, Ricardo Reyes-Chilpa   +2 more
exaly   +6 more sources

In vitro plant regeneration of Vismia guianensis through organogenesis

Plant Cell, Tissue and Organ Culture, 1999
A protocol for in vitro plant regeneration through organogenesis was established for Vismia guianensis(Hypericaceae), a species that produces an anti-cancer compound. The highest mean number of shoots per gram of callus (57.33) was obtained on Murashige and Skoog medium supplemented with 4.44 μM 6-benzyl-aminopurine, 5.70 μM indole-3-acetic acid and 12.
Alberto Vitali, Gabriella Pasqua, Barbara Monacelli   +2 more
exaly   +3 more sources

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Chemistry of the Genus Vismia

Planta Medica, 1980
From the leaves of V. guianensis (Guttiferae), collected in Brasil, several secondary metabolites were isolated: lupeol, s-amyrin, s-sitosterol, (-) epicatechin, procyanidin B2 and vismione A (prenylated anthranoid). This last compound underwear rearrangement to the corresponding anthraquinone and bianthrones during chromatographic purification.
F Delle Monache
exaly   +5 more sources

New prenylated Quinones from Vismia guineensis

Journal of Natural Products, 2000
From the roots of Vismia guineensis 23 structurally related compounds were isolated and identified. Ten of them are new constituents, namely 3-O- (2-hydroxy-3-methylbut-3-enyl)-emodin (1); 3-O-(2-methoxy-3-methylbut-3- enyl)-emodin (2); 1,8-dihydroxy-3-(2-methoxy-3-methylbut-3-enyloxy)-6- methylxanthone (3); 1,8-dihydroxy-3-geranyloxy-6-methylxanthone (
A. R. BILIA, A. WARSAME YUSUF, BRACA, ALESSANDRA, A. KEITA, MORELLI, IVANO   +4 more
core   +5 more sources

Anthraquinones from the fruits of Vismia laurentii

Phytochemistry, 2008
Phytochemical study of the fruits of Vismia laurentii resulted in the isolation of five structurally related compounds. Three of them are constituents, namely, laurentiquinone A (1) (methyl 1,6,8-trihydroxy-3-methyl-7-(3-methylbut-2-enyl)-9,10-dioxo-9,10-dihydroanthracene-2-carboxylate), laurentiquinone B (2) (methyl 5,7-dihydroxy-2,2,9-trimethyl-6,11 ...
Diderot Tchamo, Noungoue, Cyril, Antheaume, Mehdi, Chaabi, Bruno, Lenta Ndjakou, Silvère, Ngouela, Annelise, Lobstein, Etienne, Tsamo   +6 more
openaire   +3 more sources

Laurentixanthones A and B, antimicrobial xanthones from Vismia laurentii

Phytochemistry, 2006
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Nguemeving, Jean Robert, Azebaze, Anatole Guy Blaise, Kuete, Victor, Eric Carly, Nono Nono, Beng, Véronique Penlap, Meyer, Michèle, Blond, Alain, Bodo, Bernard, Nkengfack, Augustin Ephrem   +8 more
openaire   +2 more sources

Bioactive Constituents from Three Vismia Species

Journal of Natural Products, 2003
Bioassay-guided fractionation of the methanolic extracts of Vismia baccifera, V. jefensis, and V. macrophylla against human breast, CNS, and lung cancer cell lines resulted in the isolation of a new compound, ferruginin C (1), and seven known compounds, ferruginins A (2) and B (3), vismin (4), harunganin (5), vismione B (6), deacetylvismione H (7), and
Hussein, Ahmed A., Bozzi, Berena, Correa A., Mireya D., Capson, Todd L., Kursar, Thomas A., Coley, Phyllis D., Solis, Pablo N., Gupta, Mahabir P.   +7 more
openaire   +2 more sources

Total assignment of 1H and 13C NMR spectra of a prenylated oxanthrone from Vismia latifolia

Magnetic Resonance in Chemistry, 2000
New prenylated oxanthrones, vismianol A and vismianol B [(1,3,8,10-tetrahydroxy-6-methyl-4,5-bis(3- methylbut-2-enyl)anthracen-9(10H)-one) (3a and 3c)] were isolated from the roots of Vismia latifolia (Clusiaceae) as a mixture of two enantiomers, in ...
Marcelo Dos Santos
exaly   +2 more sources