Keywords: Natural products / Dyes/Pigments / Anthocyanins / Polyphenols / Ellagitannins Kinetic and thermodynamic UV/Vis and structural NMR spectroscopic investigations on the anthocyano-ellagitannin hybrid 1-deoxyvescalagin-(1βǞ8)-oenin revealed that its enhanced color stability relative to that of the red-colored pigment oenin and resulting bathochromism can be rationalized in terms of an intramolecular π-stacking between the grape-
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