Rodrigues, JulianaRinaldo, Danieldos Santos, Lourdes CampanerVilegas, Wagner [UNESP]2014-05-202014-05-202007-07-01Phytochemistry. Oxford: Pergamon-Elsevier B.V., v. 68, n. 13, p. 1781-1784, 2007.0031-9422http://hdl.handle.net/11449/37851Chromatographic fractionation of the methanolic extract from the leaves of Miconia cabucu Hoehne (Melastomataceae) afforded the first example of a C-6-C-6 linked flavone dimer, 5-hydroxy-4',7-dimethoxyflavone-(6-C-6)-5-hydroxy-3 4',7-trimethoxyflavone as well as the known compounds, quercetin- 3-O-alpha-L- rhamnopyranosyl-(2 -> 1)-O-beta-D-xylopyranoside, quercetin-3-O-alpha-L-rhamnopyranoside, myricetin-3-O-alpha-L-rhamnopyranoside, quercetin-3-O-beta-D-glucopyranoside, kaempferol -3-O-beta-D-(6-coumaroyl) -glucopyranoside and gallic acid. Their chemical identities were established by application of NMR spectroscopic methods including 2D-NMR, as well as UV and ESI-MS analyses. (c) 2007 Elsevier Ltd. All rights reserved.1781-1784engMiconia cabucuMelastomataceaeflavonoidsflavone dimerArtigo10.1016/j.phytochem.2007.04.020WOS:000248365800011Acesso restrito79278772243268370000-0003-3032-2556