The molecule is a member of the class of pyranoxanthones that is 2H,6H-pyrano[3,2-b]xanthen-6-one substituted by a 2-hydroperoxy-3-methylbut-3-en-1-yl moiety at position 12, hydroxy groups at positions 5 and 8 and geminal methyl groups at position 2. It is isolated from the stem bark of Calophyllum brasiliense and exhibits significant inhibitory activity against 12-O-tetradecanoylphorbol-13-acetate induced Epstein-Barr virus early antigen activation in Raji cells. It has a role as a metabolite and an antineoplastic agent. It is a polyphenol, a member of pyranoxanthones and a peroxol.
12-(2-hydroperoxy-3-methylbut-3-enyl)-5,8-dihydroxy-2,2-dimethylpyrano[3,2-b]xanthen-6-one