The fructus cortex of Garcinia lateriflora BI. Afforded 2,5 –dihydroxy xanthon (1) The structure of (1) was elucidated using IR, NMR spectroscopy. The data resulted from the education then was compared to the data reported in literatures. The brine shrimp lethality test showed that (1) was toxic (enough active). The bacterial activity test of (1) to Staphylococcus aureus showed that it had a …