In the course of our screening program for artemisinin-like antimalari
al compounds from microorganisms, seven fungal metabolites such as rad
icicol and heptelidic acid were identified as active compounds. Some o
f them exhibited antimalarial activity in vitro against the human mala
ria parasite Plasmodium falciparum to the extent of approximately 1/10
as potent as artemisinin. Radicicol was moderately active in vivo aga
inst Plasmodium berghei in mice.