A new lignan glycoside from the stem bark of styrax japonica s. et Z.

Abstract
A new lignan glycoside was isolated from the stem bark of Styrax japonica (Styracaceae). This lignan glycoside, named styraxjaponoside C (1), was identified by spectroscopic methods. In addition, six known compounds, arctiin (2), pinoresinol-4-β-D-glucopyranoside (3), matairesinoside (4), methylsyringin (5), syringin (6), and egonol (7) were isolated from this plant. The structures of 1–7 were determined on the basis of spectroscopic and physicochemical data. Compounds 2 and 5 were isolated from this plant for the first time.