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  • Title: Antiplasmodial alkaloids from Desmos rostrata.
    Author: Nguyen NT, Pham VC, Litaudon M, Guéritte F, Grellier P, Nguyen VT, Nguyen VH.
    Journal: J Nat Prod; 2008 Dec; 71(12):2057-9. PubMed ID: 19053513.
    Abstract:
    Two new alkaloids, desmorostratine (1) and discretine N-oxide (2), were isolated from the stem bark of Desmos rostrata, together with five known alkaloids, discretine (3), dehydrodiscretine (4), pseudocolumbamine (5), predicentrine (6), and aristolactam AII (7). The structures were established on the basis of spectroscopic data, including mass spectrometry and 2D-NMR. Compound 1 was cytotoxic against KB cells (IC(50) 2.4 microM), while 2, 3, and 4 inhibited Plasmodium falciparum (IC(50) of 4.2, 1.6, and 0.9 microM, respectively).
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