About: Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings

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About: Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings Goto Sponge NotDistinct Permalink

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si?13C) couplings (n > 1). Using previously described method for measurements of these couplings the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7-hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si?13C) couplings (n > 1). Using previously described method for measurements of these couplings the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7-hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. (en) The lines in 29Si NMR spectra of silylated polyphenols and some other compounds are difficult to assign owing to the absence of couplings with protons outside the silyl group. The assignment can be derived through small nJ(29Si?13C) couplings (n > 1). Using previously described method for measurements of these couplings the assignment procedure is demonstrated here on three examples of trimethylsilylated phenols: 7-hydroxyflavone, ferulic acid, and quercetin. In some cases the procedure can be used to identify carbon atoms to which the siloxy groups are attached. (cs)
Title	Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings (en) Identifikace polyfenolů z rostlinných materiálů jejich silylací a 29Si NMR spektroskopie - přiřazení linií spinovým párováním 29Si-13C (cs)
skos:prefLabel	Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings (en) Identifikace polyfenolů z rostlinných materiálů jejich silylací a 29Si NMR spektroskopie - přiřazení linií spinovým párováním 29Si-13C (cs)
skos:notation	RIV/60460709:41210/05:10077!RIV06-MSM-41210___
http://linked.open.../vavai/riv/strany	829;834
http://linked.open...avai/riv/aktivita	Z
http://linked.open...avai/riv/aktivity	Z(MSM6046070901)
http://linked.open...iv/cisloPeriodika	10
http://linked.open...vai/riv/dodaniDat	2006
http://linked.open...aciTvurceVysledku	Proněk, David Lachman, Jaromír
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Česká zemědělská univerzita v Praze / Fakulta agrobiologie, potravinových a přírodních zdrojů
http://linked.open...dnocenehoVysledku	524131
http://linked.open...ai/riv/idVysledku	RIV/60460709:41210/05:10077
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	29Si NMR, 13C NMR, nJ(29Si-13C), line assignment, long-range couplings, polyphenols, flavonoids (en)
http://linked.open.../riv/klicoveSlovo	13C NMR 29Si NMR flavonoids polyphenols line assignment long-range couplings nJ(29Si-13C)
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[0BF324180E0F]
http://linked.open...i/riv/nazevZdroje	Magnetic Resonance in Chemistry
http://linked.open...in/vavai/riv/obor	CB
http://linked.open...ichTvurcuVysledku	2 (xsd:int)
http://linked.open...cetTvurcuVysledku	7 (xsd:int)
http://linked.open...UplatneniVysledku	2005
http://linked.open...v/svazekPeriodika	43
http://linked.open...iv/tvurceVysledku	Cuřínová, Petra Lachman, Jaromír Schraml, Jan Sýkora, Jan Blechta, Vratislav Soukupová, Ludmila Proněk, David
http://linked.open...n/vavai/riv/zamer	Setrvalé zemědělství, kvalita zemědělské produkce, krajinné a přírodní zdroje.
issn	0749-1581
number of pages	6 (xsd:int)
http://localhost/t...ganizacniJednotka	41210
is http://linked.open...avai/riv/vysledek of	Identification of polyphenols from plant materials through their silylation and 29Si NMR spectroscopy - line assignement through 29Si-13C spin-spin couplings

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