Biochemical studies on chestnut galls. IV. Isolation and structure of a new phenolic glycoside, neocretanin, from chestnut galls.

Abstract

A tannic substance named neocretanin was isolated from chestnut galls by chromato-graphic separation. The chemical structure of neocretanin was established as 1-O-(2', 6'-dihydroxy-4'-formyl)-phenyl-6-O-galloyl-β-D-glucopyranose (I) on the basis of spectral analyses and enzymatic hydrolyses.