Absolute Configurations of the cis-Dihydroquercetin-3-O-β-L-Rhamnosides Isoastilbin and Neoisoastilbin

Abstract

The absolute configurations of the cis-dihydroquercetin-3-O-β-L-rhamnosides isoastilbin and neoisoastilbin are reaffirmed as 2R, 3S and 2S, 3R, respectively, despite recent reports to the contrary.