New phenolic glucosides from the leaves of Eurya tigang

Three new compounds, 6'-O-coumaroyl-1'-O-[2-(4-hydroxyphenyl)ethyl]-beta-D-glucopyra nos ide [1] (eutigoside A), 6'-O-coumaroyl-1'-O-[2-(1-hydroxy-4-oxo-2,5-cyclohexadien-1- yl)ethyl]-beta-D-glucopyranoside [2] (eutigoside B), and 6'-O-cinnamoyl-1'-O-[2-(1-hydroxy-4-oxo-2,5-cyclohexadien-1-yl)eth yl]- beta-D-glucopyranoside [3] (eutigoside C) have been isolated from the leaves of Eurya tigang, along with other known compounds (afzelin, quercitrin, p-coumaric acid, methyl-alpha-D-fructofuranoside, isorengyol, and euryanoside). Their structures were determined by chemical and spectroscopic methods (uv, ir, ms, 1H-1H COSY, and 1H-13C COSY).