Anti-microbial and Haemolytic Activity
Compound 3 was isolated as a yellow powder. Its molecular
formula was determined as C18H18O6 ([M]1; m/z
330.1103) by HR-MS. The UV spectrum with absorptions at 244 and 319 nm was indicative of a 1,3,5-trioxygenated xanthone
moiety, similar to that reported for 1,3,5-trihydroxy-4-
prenylxanthone.5)