The metabolism of gallic acid and hexahydroxydiphenic acid in plants. Part 3. Esters of (R)- and (S)-hexahydroxydiphenic acid and dehydrohexahydroxydiphenic acid with D-glucopyranose (1C4 and related conformations)

Abstract

In a small group of plants a process of further metabolism of galloyl-D-glucose esters occurs in which oxidative coupling takes place between galloyl ester groups in the 1,6:2,4 or 3,6-position of D-glucopyranose in its least favoured ¹C₄(C-1) or related skew-boat conformations. This group also metabolise esters of dehydrohexahydroxydiphenic acid (1).