A new coumarin, scataccanol (1) and 10 known compounds were isolated from the fruits of Scaevola taccada (Gaertn.) Roxb. All compounds were evaluated for antifungal activity against Pythium insidiosum. Compounds 5 and 7 showed strong antifungal activity with minimum inhibitory concentration values of 5 and 10 μg/mL, respectively. Structural determination of all compounds was accomplished by 1D and 2D-NMR, IR and MS.
Keywords: Pythium insidiosum; Scaevola taccada; antifungal; furanocoumarin; iridoid.