1,7-Dihydroxy-2,3-methylenedioxyxanthone is isolated from Polygala cyparissias which is a small herb found in Brazil, Argentina and Uruguay. Polygala cyparissias are used in folk medicine as an anaesthetic[1].
[1]. Klein-JÚnior LC, et al. Antihyperalgesic activity of the methanol extract and some constituents obtained from Polygala cyparissias (Polygalaceae). Basic Clin Pharmacol Toxicol. 2012 Sep;111(3):145-53.
















