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Statements

Subject Item
n2:RIV%2F00216224%3A14310%2F07%3A00022177%21RIV10-MSM-14310___
rdf:type
n15:Vysledek skos:Concept
dcterms:description
Five geranylflavonoids, one prenylated flavonoid, and a simple flavanone were isolated from an ethanolic extract of Paulownia tomentosa fruit. Tomentodiplacol (1), 3-O-methyl-5-methoxydiplacol (2), 6-isopentenyl-3-O-methyltaxifolin (3), and dihydrotricin (4) are reported from a natural source for the first time and 3-O-methyldiplacone (6) for the first time from the genus Paulownia. The structures of the compounds were determined by mass spectrometry, including HR-MS, and by 1D and 2D NMR spectroscopy. The cytotoxicity and DPPH (2,2-diphenyl-1-picrylhydrazyl) quenching activity of some of these compounds were tested, with diplacone proving to be the best antioxidant, though the most cytotoxic compound. Five geranylflavonoids, one prenylated flavonoid, and a simple flavanone were isolated from an ethanolic extract of Paulownia tomentosa fruit. Tomentodiplacol (1), 3-O-methyl-5-methoxydiplacol (2), 6-isopentenyl-3-O-methyltaxifolin (3), and dihydrotricin (4) are reported from a natural source for the first time and 3-O-methyldiplacone (6) for the first time from the genus Paulownia. The structures of the compounds were determined by mass spectrometry, including HR-MS, and by 1D and 2D NMR spectroscopy. The cytotoxicity and DPPH (2,2-diphenyl-1-picrylhydrazyl) quenching activity of some of these compounds were tested, with diplacone proving to be the best antioxidant, though the most cytotoxic compound.
dcterms:title
C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits
skos:prefLabel
C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits C-Geranyl Compounds from <i>Paulownia tomentosa</i> Fruits
skos:notation
RIV/00216224:14310/07:00022177!RIV10-MSM-14310___
n5:aktivita
n12:Z n12:S n12:P
n5:aktivity
P(1A8666), P(LC06030), S, Z(MSM0021622413)
n5:cisloPeriodika
8
n5:dodaniDat
n6:2010
n5:domaciTvurceVysledku
n14:1326708 n14:8533113
n5:druhVysledku
n17:J
n5:duvernostUdaju
n11:S
n5:entitaPredkladatele
n7:predkladatel
n5:idSjednocenehoVysledku
413173
n5:idVysledku
RIV/00216224:14310/07:00022177
n5:jazykVysledku
n19:eng
n5:klicovaSlova
flavonoid; geranyl; natural product; NMR
n5:klicoveSlovo
n9:geranyl n9:NMR n9:natural%20product n9:flavonoid
n5:kodStatuVydavatele
US - Spojené státy americké
n5:kontrolniKodProRIV
[ACD39DC721DE]
n5:nazevZdroje
Journal of Natural Products
n5:obor
n18:CB
n5:pocetDomacichTvurcuVysledku
2
n5:pocetTvurcuVysledku
8
n5:projekt
n16:LC06030 n16:1A8666
n5:rokUplatneniVysledku
n6:2007
n5:svazekPeriodika
70
n5:tvurceVysledku
Marek, Radek Grycová, Lenka Jankovská, Dagmar Forejtníková, Hana Suchý, Václav Šmejkal, Karel Lemiere, Filip Vančo, Ján
n5:zamer
n10:MSM0021622413
s:issn
0163-3864
s:numberOfPages
5
n4:organizacniJednotka
14310