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Publikováno v:
Organic Magnetic Resonance. 22:106-108
The study of a set of 3-benzylidene-4-chromanones, 3-benzyl-4-chromanones, 3-benzyl-3-hydroxy-4-chromanones and 3-benzylchromones (homoisoflavonoids) by 13C NMR spectroscopy shows the influence of the structure of these molecules on the chemical shif