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231223s2008 xx |||||o 00| ||eng c |
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|a 10.1002/mrc.2232
|2 doi
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|a pubmed24n0596.xml
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|e rakwb
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|a eng
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|a March, Raymond E
|e verfasserin
|4 aut
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|a Empirically predicted 13C NMR chemical shifts for 8-hydroxyflavone starting from 7,8,4'-trihydroxyflavone and from 7,8-dihydroxyflavone
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|a Date Completed 05.08.2008
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|a Date Revised 09.06.2008
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|a published: Print
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|a Citation Status MEDLINE
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|a Copyright (c) 2008 John Wiley & Sons, Ltd.
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|a 8-Hydroxyflavone is not found in nature. While the (13)C chemical shifts of 8-hydroxyflavone have been reported previously, the observed (13)C chemical shifts were not assigned. A previously reported empirical predictive tool has been applied in reverse in order to deconvolute the (13)C chemical shifts for 8-hydroxyflavone from each of those of 7,8,4'-trihydroxyflavone and 7,8-dihydroxyflavone together with those of 7-hydroxyflavone, 4'-hydroxyflavone, and flavone. The two sets of calculated (13)C chemical shifts for 8-hydroxyflavone are in good agreement with each other in that the average absolute difference is 0.4 ppm. The previously reported but unassigned (13)C chemical shifts for 8-hydroxyflavone have been assigned by matching them with the averages of the two sets of calculated (13)C chemical shifts for 8-hydroxyflavone such that the minimum average absolute difference is 0.63 ppm. The assigned (13)C chemical shifts of 8-hydroxyflavone may be used, along with the (13)C chemical shifts of the remaining monohydroxyflavones, as part of a predictive tool to rapidly assess the (13)C NMR spectra of C8-hydroxylated flavonoids
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a 6,7-dihydroxyflavone
|2 NLM
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|a 8-hydroxyflavone
|2 NLM
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|a Carbon Isotopes
|2 NLM
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|a Flavones
|2 NLM
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|a norwogonin
|2 NLM
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|a 4443-09-8
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|a Burns, Darcy C
|e verfasserin
|4 aut
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|a Ellis, David A
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Magnetic resonance in chemistry : MRC
|d 1985
|g 46(2008), 7 vom: 05. Juli, Seite 680-2
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|g volume:46
|g year:2008
|g number:7
|g day:05
|g month:07
|g pages:680-2
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|u http://dx.doi.org/10.1002/mrc.2232
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