Isolation and Characterization of Novel Stilbene Derivatives from Riesling Wine

Publisher Website
Google Scholar
Abstract
Besides the already known stilbenes trans-resveratrol as well as isomeric piceids, seven novel stilbene derivatives have been isolated from a commercial Riesling wine. The newly identified compounds included the monostilbene 2,4,6-trihydroxyphenanthrene-2-O-glucoside, as well as two isomeric resveratrol-2-C-glucosides. In addition, four dimeric stilbenes, i.e., cis- and trans-ε-viniferin diglucoside as well as pallidol glucoside and pallidol diglucoside, have also been obtained for the first time from Riesling wine. Keywords: Antioxidants; white wine; Riesling; resveratrol-2,4,6-trihydroxyphenanthrene 2-O-glucoside; resveratrol 2-C-glucosides; ε-viniferin diglucosides; pallidol glucoside; pallidol diglucoside.