High-throughput screening of a plant and marine invertebrate extract library to find natural products that inhibit the malarial parasite enzyme target hemoglobinase II led to the isolation of two new active prenylated chalcones, bipinnatones A (1) and B (2), from aerial parts of the Queensland shrub Boronia bipinnata. Their structures were assigned from interpretation of 2D NMR and high-resolution ESIMS data. Compounds 1 and 2 inhibited hemoglobinase II with IC 50 values of 64 and 52 microM, respectively.
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Prenylated dihydrochalcones from Boronia bipinnata that inhibit the malarial parasite enzyme target hemoglobinase II.
J Nat Prod
August 2008
Eskitis Institute, Griffith University, Brisbane, Queensland, Australia 4111.
High-throughput screening of a plant and marine invertebrate extract library to find natural products that inhibit the malarial parasite enzyme target hemoglobinase II led to the isolation of two new active prenylated chalcones, bipinnatones A (1) and B (2), from aerial parts of the Queensland shrub Boronia bipinnata. Their structures were assigned from interpretation of 2D NMR and high-resolution ESIMS data. Compounds 1 and 2 inhibited hemoglobinase II with IC 50 values of 64 and 52 microM, respectively.
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