A 4-hydroxy-β-ionone disaccharide glycoside from raspberry fruits

From a methanolic extract of raspberry fruits, the 4-O-α-l-arabinofuranosyl-(1→6)-β-d-glucopyranoside of (4S)-4-hydroxy-β-ionone was isolated by adsorption chromatography on XAD-2, followed by liquid chromatography on Sephadex LH-20, RP-18 and silica gel as well as by reverse-phase HPLC. The structure of the norcarotenoid glycoside was determined by 1H and 13C NMR spectroscopy and DCI-mass spectral analysis. The absolute configuration of the...