Malaria, a disease caused by the Plasmodium parasite, has spread globally, mainly in the African subcontinent. Species of parasites resistant to usual drugs like chloroquine, used to treat malaria, have led research groups to search for new drugs to expand the current therapeutic arsenal. Fourteen 2-methyl-3-carboxylnaphtho[2,3-b]furan quinone derivatives (FNQ) were synthesized and evaluated using cultures of Plasmodium falciparum in vitro. From all FNQ derivatives tested, six of them (4,7-10,14) showed IC50 values ranging from 0.05 μM to 11.3 μM. The glutamine-FNQ (9) and spermidine-FNQ derivatives (14) were the best antiplasmodial molecules tested, with selectivity indexes of 56 and 75, respectively. Our data suggests these two compounds are appropriate candidates for investigation as potential antimalarial drugs against drug-resistant Plasmodium species.