A new phenylethanoid glycoside from the fruits of <Emphasis Type="Italic">Callicarpa japonica</Emphasis> Thunb. var. <Emphasis Type="Italic">luxurians</Emphasis> Rehd.

A new phenylethanoid glycoside, named acetyl forsythoside B (1), was isolated from the fruits of Callicarpa japonica Thunb. var. luxurians Rehd. (Verbenaceae) along with forsythoside B (2), brandioside (3), poliumoside (4), actioside (5), and apigenin 7-galacturonide (6). The structures of 1–6 were determined on the basis of spectroscopic data. In addition, the antioxidative activity of 1–4 and 6 was evaluated by the ferric thiocyanate method. All of the tested compounds except 6 exhibited almost the same activity as 3-tert-butyl-4-hydroxyanisole. The radical-scavenging effect of 1–6 on the stable free radical 1,1-diphenyl-2-picrylhydrazyl was also examined. Compounds 1–5 showed almost twice the activity compared to α-tocopherol.