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. 1995 Apr;61(2):177-8.
doi: 10.1055/s-2006-958042.

In vitro antimalarial activity of quassinoids from Eurycoma longifolia against Malaysian chloroquine-resistant Plasmodium falciparum isolates

H H Ang, K L Chan, J W Mak

In vitro antimalarial activity of quassinoids from Eurycoma longifolia against Malaysian chloroquine-resistant Plasmodium falciparum isolates

H H Ang et al. Planta Med. 1995 Apr.

Abstract

Three quassinoids from the roots of Eurycoma longifolia Jack were evaluated for antimalarial activity against nine Plasmodium falciparum isolates obtained from patients infected with chloroquine-resistant malaria. The results indicated that eurycomanol, eurycomanol 2-O-beta-D-glucopyranoside, and 13 beta, 18-dihydroeurycomanol possessed antimalarial activity with IC50 values of 1.231-4.899 microM, 0.389-3.498 microM, and 0.504-2.343 microM, respectively, compared with 0.323-0.774 microM for chloroquine.

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