1: Phytochemistry. 2009 Jan;70(1):86-94. Epub 2008 Dec 4. Polyphenols isolated from antiradical extracts of Mallotus metcalfianus. Rivière C, Hong VN, Pieters L, Dejaegher B, Heyden YV, Van MC, Quetin-Leclercq J. Université Catholique de Louvain, Louvain Drug Research Institute, CHAM Unit, UCL 7230, Avenue E. Mounier 7, B-1200 Brussels, Belgium. Six flavonoids including two new flavones, luteolin 7-O-(4''-O-(E)-coumaroyl)-beta-glucopyranoside), chrysoeriol-7-O-(4''-O-(E)-coumaroyl)-beta-glucopyranoside) and a mixture of two pairs of diastereoisomeric flavonolignans, (+/-)-hydnocarpin 7-O-(4''-O-(E)-coumaroyl)-beta-glucopyranoside)/(+/-)-hydnocarpin-D 7-O-(4''-O-(E)-coumaroyl)-beta-glucopyranoside) with a 2:1 ratio were isolated from the whole plant of Mallotus metcalfianus Croizat, in addition to 10 known compounds. Their structures were evaluated on the basis of different spectroscopic methods, including extensive 1D and 2D NMR spectroscopy. Some extracts have moderate antimicrobial properties and interesting antiradical (DPPH) activity, as well as some compounds isolated from this species. Tannins were also identified in some active extracts. PMID: 19062052 [PubMed - in process] Related Links Flavonoids from barrel medic (Medicago truncatula) aerial parts. [J Agric Food Chem. 2007] PMID:17348681 Acylated flavonol glycosides from leaves of Stenochlaena palustris. [J Nat Prod. 1999] PMID:9917285 Spinoside, new coumaroyl flavone glycoside from Amaranthus spinosus. [Arch Pharm Res. 2004] PMID:15646794 Flavones and flavone glycosides from Halophila johnsonii. [Phytochemistry. 2008] PMID:18771781 Antioxidant activity of the main phenolic compounds isolated from hot pepper fruit (Capsicum annuum L). [J Agric Food Chem. 2005] PMID:15740069