Isonotholaenic acid
Isonotholaenic acid is a dihydrostilbenoid first isolated from the Andean fern Argyrochosma nivea, and is also found in other species of that genus. Before its discovery and structure determination, it had been misidentified as notholaenic acid. Its derivatives have been suggested as possible antiplasmodial compounds. This compound shows an anti-chagasic activity.