New Gallotannin and other Phytochemicals from Sycamore Maple (Acer pseudoplatanus) Leaves

The maple (Acer) genus is a reported source of bioactive (poly)phenols, including gallotannins, but several of its members, such as the sycamore maple (A. pseudoplatanus). remain uninvestigated. Herein, thirty-nine compounds, including a new gallotannin, 1,2,3-tri- O-galloyl-6- O-( p-hydroxybenzoyl)-β-D-glucopyranoside (1), and thirty-eight (2-39) known compounds, consisting of four gallotannins, one ellagitannin, thirteen flavonoids, eight...