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Carbon-13 nuclear magnetic resonance spectroscopy of flavonoid and isoflavonoid compounds |
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| Authors: | Ernest Wenkert Hugo E Gottlieb |
| Institution: | Department of Chemistry, Indiana University, Bloomington, IN 47401, U.S.A. |
| Abstract: | The 13C NMR spectra of 15 flavonoid and 9 isoflavonoid substances of various ring C oxidiation states were analyzed and their carbon shifts assigned. In the case of 3 terpenic flavones and two glycoflavones linewidths were related qualitatively to molecular segmental motion. |
| Keywords: | flavonoids isoflavonoids flavone 7-hydroxyflavone 5-methyl-7-hydroxy-4′-methoxyflavone rubraflavone-A mulberrin mulberrochromene quercetin artemetin rutin robinin: flavanone naringenin dihydromorin catechin isoformononetin cabreuvin caviunin 7 4′-dimethoxyisoflavanone 3′-hydroxy-7 4′-dimethoxyisoflavanone duartin 1 1-dimethylallylcyclobin |
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