The compounds 1 and 2 have the chromone structure, but 2 is a
phenolic compound due to OH groups at C-3 and C-30 . Compound 2
is able to give electrons or H to the media via these groups. Therefore,
it is not surprising for 2 that it can act as antioxidant. Compound
1, however, has no hydroxyl groups and it was unable to
scavenge the radicals (Table 1).