In a chemical examination of the bark of Prunus grayana, three new phenylpropanoid glucosides, grayanoside A, grayanoside B and grayanin, have been isolated. The structures of these compounds have been established to be 2-(4-hydroxyphenyl)ethyl-(6-O-feruloyl)-β-D-glucopyranoside, 2-(3,4-dihydroxyphenyl)ethyl-(6-O-feruloyl)-β-D-glucopyranoside, and (2R)-[(6-O-caffeoyl)-β-D-glucopyranosyloxy]benzeneacetonitrile, respectively, on the basis of the spectroscopic studies and the chemical evidence.