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Natural abundance 17 O NMR spectra of chromanones, chromones, flavanones and flavones
Author(s) -
Duddeck Helmut,
Jászberényi Joseph Csaba,
Lévai A.,
Timár Tibor,
Elgamal M. Hani A.
Publication year - 1989
Publication title -
magnetic resonance in chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.483
H-Index - 72
eISSN - 1097-458X
pISSN - 0749-1581
DOI - 10.1002/mrc.1260270215
Subject(s) - chemistry , flavones , steric effects , intramolecular force , substituent , flavanone , hydrogen bond , nuclear magnetic resonance spectroscopy , proton nmr , stereochemistry , carbon 13 nmr , nmr spectra database , fluorine 19 nmr , two dimensional nuclear magnetic resonance spectroscopy , computational chemistry , organic chemistry , flavonoid , spectral line , molecule , physics , chromatography , astronomy , antioxidant
17 O NMR data for some chromanones, chromones, flavanones and flavones are discussed in terms of steric, mesomeric and inductive substituent interactions, intramolecular hydrogen bonding and conformational changes. It is shown that such effects can be used to rationalize 17 O NMR data of compounds with larger and more complicated structures.