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Natural abundance 17 O NMR spectra of thio analogues of chromanones, chromones, flavanones and flavones
Author(s) -
Duddeck Helmut,
Lévai Albert
Publication year - 1992
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.1260300112
Subject(s) - chemistry , flavones , steric effects , substituent , thio , ring (chemistry) , flavanone , stereochemistry , nmr spectra database , carbon 13 nmr , abundance (ecology) , computational chemistry , organic chemistry , spectral line , flavonoid , chromatography , antioxidant , physics , astronomy , fishery , biology
The 17 O NMR data of thio analogues of chromanones, chromones, flavanones and flavanones are compared with those of corresponding oxygen analogues. Substituent effects are discussed in terms of steric and electronic interactions and also the conformational behaviour of some substituents and the hetero ring.