Université de Fribourg

In vitro antitubercular activity of extract and constituents from the stem bark of Disthemonanthus benthamianus

Evina, Jean Noel ; Ngono Bikobo, Dominique Serge ; Zintchem, Auguste Abouem A. ; Mbabi Nyemeck II, Norbert ; Moni Ndedi, Esther Del Florence ; Betote Diboué, Patrick Hervé ; Nyegue, Maximilienne Ascension ; Atchadé, Alex de Théodore ; Pegnyemb, Dieudonné Emmanuel ; Koert, Ulrich ; Bochet, Christian G.

In: Revista Brasileira de Farmacognosia, 2017, vol. 27, no. 6, p. 739-743

A new C-glycosylflavone, apigenin 7-methyl ether 6-C-[β-xylopyranosyl-(1→3)-β- glucopyranoside] named distemonanthoside was isolated from the stem bark of Distemonanthus benthamianus Baill., Fabaceae, along with six known compounds, sitosterol 3-O-β-d-glucopyranoside, 4-methoxygallic acid, syringic acid, quercetin, 6″- O-acetylvitexin, quercetin 3-O-β-d-glucopyranoside. The structures...

Université de Fribourg

Cytotoxic flavonoids and other constituents from the stem bark of Ochna schweinfurthiana

Ndongo, Joseph T. ; Issa, Mark E. ; Messi, Angelique N. ; Mbing, Joséphine Ngo ; Cuendet, Muriel ; Pegnyemb, Dieudonné Emmanuel ; Bochet, Christian G.

In: Natural Product Research, 2015, vol. 29, no. 17, p. 1684-1687

Seven flavonoids, hemerocallone (1), 6,7-dimethoxy-3′,4′-dimethoxyisoflavone (2), amentoflavone (4), agathisflavone (6), cupressuflavone (8), robustaflavone (9) and epicatechin (10), together with three other compounds, lithospermoside (3), β-D- fructofuranosyl-α-D-glucopyranoside (5) and 3β-O-D-glucopyranosyl-β-stigmasterol (7), were isolated from the ethyl acetate extract of the stem...

Université de Fribourg

The natural diyne-furan fatty acid EV-086 is an inhibitor of fungal delta-9 fatty acid desaturation with efficacy in a model of skin dermatophytosis

Knechtle, Philipp ; Diefenbacher, Melanie ; Greve, Katrine B. V. ; Brianza, Federico ; Folly, Christophe ; Heider, Harald ; Lone, Museer A. ; Long, Lisa ; Meyer, Jean-Philippe ; Roussel, Patrick ; Ghannoum, Mahmoud A. ; Schneiter, Roger ; Sorensen, Alexandra S.

In: Antimicrobial Agents and Chemotherapy, 2013, vol. 58, no. 1, p. 455–466

Human fungal infections represent a therapeutic challenge. Although effective strategies for treatment are available, resistance is spreading, and many therapies have unacceptable side effects. A clear need for novel antifungal targets and molecules is thus emerging. Here, we present the identification and characterization of the plant-derived diyne-furan fatty acid EV-086 as a novel antifungal...

Université de Fribourg

Arginase: the emerging therapeutic target for vascular oxidative stress and inflammation

Yang, Zhihong ; Ming, Xiu-Fen

In: Frontiers in Inflammation, 2013, vol. 4, p. 149

Oxidative stress and inflammation in the vascular wall are essential mechanisms of atherosclerosis and vascular dysfunctions associated with risk factors such as metabolic diseases, aging, hypertension, etc. Evidence has been provided that activation of the vascular endothelial cells in the presence of the risk factors promotes oxidative stress and vascular inflammatory responses, leading to...