Results 171 to 180 of about 3,711 (200)

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

Xyleborus vismiae Wood 1974

2015
Xyleborus vismiae Wood, 1974 Fig. 65–70 Diagnosis. Longitud de 3.3 a 3.7 mm; coloración café oscura; con setas escasas. Margen anterior del pronoto procurvado; área anterior con asperezas delgadas y densas, posterior con puntuaciones escasas y muy separadas. Élitros con puntuaciones pequeñas, ligeramente espaciadas, estría 1 semidefinida. Declive
Silva, Mauricio Pérez, Martínez, Armando Equihua, Atkinson, T. H.   +2 more
openaire   +1 more source

Prenylated Anthraquinones and Other Constituents from the Seeds of Vismia laurentii

Chemical and Pharmaceutical Bulletin, 2007
Two new prenylated anthraquinones, laurenquinone A (1) and B (2) were isolated from the seeds of Vismia laurentii together with four known compounds; xanthone V(1) (3), physcion (4), 3-geranyloxyemodin anthrone (5) and friedelin (6). The structures of the new metabolites were determined with the help of spectroscopic data including extensive 2D-NMR ...
Hidayat Hussain, Pierre Tane, Teunis van Ree   +2 more
exaly   +4 more sources

Vismia japurensis Reichardt 1878

2017
8.2 Vismia japurensis Reichardt (1878: 209) (Fig. 7A–B) Type:— BRAZIL. Amazonas: Prov. do Alto Amazonas in silva ad ripas fluminis Japurá, s.d., fl., C. F. P. Martius s.n. (syntypes: M, barcodes 0112247, 0112245, 0112246, 0112244, 0112243). Shrubs up to 2 m. Exudate orange.
Cabral, Fernanda Nunes, Bittrich, Volker, Hopkins, Michael John Gilbert   +2 more
openaire   +1 more source

New bioactive aromatic compounds from Vismia guianensis

Phytochemistry, 2000
Five benzophenones, vismiaguianones A-E, and two benzocoumarins, vismiaguianins A and B were isolated from the CHCl3 extract of the roots of Vismia guianensis by bioassay-directed fractionation using the DNA strand-scission assay and KB cell line. Of the isolates obtained, vismiaguianone B exhibited DNA strand-scission activity, whereas vismiaguianones
E K, Seo, M C, Wani, M E, Wall, H, Navarro, R, Mukherjee, N R, Farnsworth, A D, Kinghorn   +6 more
openaire   +2 more sources

Vismia baccifera Triana & Planch.

2007
Hypericum bacciferum Linnaeus, Mantissa Plantarum Altera: 277. 1771. "Habitat in Mexico." RCN: 5739. Lectotype (designated here by Robson): Herb. Linn. No. 326.7 (S). Current name: Vismia baccifera (L.) Triana & Planch. (Clusiaceae).
openaire   +2 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
openaire   +4 more sources

Anthranoid Compounds with Antiprotozoal Activity fromVismia orientalis

Planta Medica, 2004
A phytochemical investigation of the 80% ethanolic extract of stem bark of Vismia orientalis Engl. (Guttiferae or Clusiaceae), a plant used in traditional medicine in Tanzania, resulted in the isolation and spectroscopic characterisation of 3-geranyloxy-6-methyl-1,8-dihydroxyanthraquinone, emodin, vismione D and bianthrone A1.
Mbwambo, Zakaria H., Apers, Sandra, Moshi, Mainen J., Kapingu, Modest C., van Miert, Sabine, Claeys, Magda, Brun, Reto, Cos, Paul, Pieters, Luc, Vlietinck, Arnold   +9 more
openaire   +3 more sources

Lycoderides hippocampus Vismia

Published as part of Lapèze, Jérémie & Lopez-Vaamonde, Carlos, 2024, Description de cinq nouvelles espèces de Lycoderides Sakakibara (Hemiptera: Auchenorrhyncha: Membracidae) de Guyane française, pp.
Lapèze, Jérémie, Lopez-Vaamonde, Carlos   +1 more
openaire   +1 more source

Vismione H and prenylated xanthones from vismia guineensis

Phytochemistry, 1986
Abstract The root bark of Vismia guineensis , collected on the Ivory Coast, contained the known geranyloxyemodin, geranyloxyemodin anthrone, madagascin anthrone, bianthrone A 1 and five new compounds: vismione H and the prenylated xanthones V 1 , V 2 , V 1a and V 2a .
BOTTA, Bruno, G. D. MONACHE, F. D. MONACHE, G. B. M., F. MENICHINI   +4 more
openaire   +2 more sources