Two new phenolic compounds from the rhizomes of Gastrodia elata BLUME

Phytochemical investigation of the rhizomes of Gastrodia elata Blume (Orchidaceae) led to the isolation and identification of twelve compounds, including two new phenolic compounds, 4-hydroxybenzyl vanillyl ether (=4-{[(4-hydroxyphenyl)methoxy]methyl}-2-methoxyphenol; 1) and 4-{{4-[4-(methoxymethyl)phenoxy]benzyl}oxy}benzyl methyl ether (=1-[4-(methoxymethyl)phenoxy]-4-{[4-(methoxymethyl)phenoxy]methyl}benzene; 2). The structures of 1 and 2 were elucidated by spectroscopic data analysis including 1D- and 2D-NMR experiments.