Cytotoxic and antioxidant constituents from the leaves of Psidium guajava

Four new compounds, guavinoside C, D, E and F (1-3, 10) were isolated from the leaves of Psidium guajava, along with six known compounds. The isolated compounds were evaluated for cytotoxic and antioxidant activities, for the purpose of finding safe antitumor and antioxidant constituents from natural resource.