In a study of 105 natural compounds, the leishmanicidal activ-
ity of the flavonoids fisetin, quercetin, luteolin and 7,8-dihydroxyf-
lavone showed high potency against the amastigotes of L. (L.)
donovani (Tasdemir et al., 2006). These four compounds also
showed potential as inhibitors of ARG-L.