Abstract
Three chromanone acids were isolated from the stem bark of Calophyllum peekelii Lauterb. Among them are two new chromanone acids, calopeekelioic acids A (1) and B (2), along with calolongic acid (3), Their structures were established by analyzing a combination of HRESIMS, 1 D, and 2 D NMR spectra. Chromanone acids 1-3 were evaluated for their antiplasmodial activity against Plasmodium falciparum strain 3D7. Compounds 1-2 showed high activity with an IC50 value of 1.70 and 1.01 µg/mL, respectively.
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