Study on the antioxidant activity of extracts from the leaves of Alchornea trewioides Chemical constituents from the leaves of Alchornea trewioides(2). Flavonoids and phenylethanoid glycosides Chemical constituents from the leaves of Alchornea trewioides(Ⅲ). Quinic acids Two New Taxa of Alchornea Sw. (Euphorbiaceae) from China Chemical constituents from the leaves of Alchornea trewioides(4). Polyphenols Chemical constituents from the leaves of Alchornea trewioides(1). Phenolic acids and related compounds