A comparison of the stage-specific efficacy of chloroquine, artemether and dioncophylline B against the rodent malaria parasite Plasmodium chabaudi chabaudi in vivo Institute of Tropical Medicine
Jozimine B, a constitutionally unsymmetric, antiplasmodial 'dimer' of the naphthylisoquinoline alkaloid ancistrocladine Institute of Tropical Medicine
Vismione H and structurally related anthranoid compounds of natural and synthetic origin as promising drugs against the human malaria parasite Plasmodium falciparum: structure-activity relationships Institute of Tropical Medicine
Natural and synthetic anthranoid compounds were subjected to an evaluation against asexual erythrocytic stages of the human malaria parasite Plasmodium falciparum in vitro. Stimulated by the good activities of Vismia guineensis extracts, a more detailed investigation of the active principles revealed the pre-nylated preanthraquinone vismione H (1) to be a potent antimalarial [50% growth-inhibitory concentration (IC50) 0.088 microg/ml]. On the ...
Differential sensitivity of erythrocytic stages of the rodent malaria parasite Plasmodium chabaudi chabaudi to dioncophylline B, a highly active naphthylisoquinoline alkaloid Institute of Tropical Medicine
First synthesis of the antimalarial naphthylisoquinoline alkaloid dioncophylline C, and its unnatural anti-HIV dimer, jozimine C Institute of Tropical Medicine
Antimalarial and cytotoxic potential of four quassinoids from Hannoa chlorantha and Hannoa klaineana, and their structure-activity relationships Institute of Tropical Medicine
Antiplasmodial activity of mono- and dimeric carbazoles Institute of Tropical Medicine
A series of mono- and dimeric natural and structurally modified carbazoles has been tested for activity against Plasmodium falciparum. One of the monomers, the synthetic compound 1,4-diacetoxy-3-methylcarbazole (17), displays the highest activity, with an IC50 value of 1.79 micrograms/ml. It is distinctly more active than the as yet best natural compound, 1-hydroxy-3-methylcarbazole (4) (4).
Chronobiology of Plasmodium chabaudi chabaudi: analysis of hourly recorded total and differential parasitaemia during a schizogonic cycle Institute of Tropical Medicine
Michellamines D-F, new HIV-inhibitory dimeric naphthylisoquinoline alkaloids, and korupensamine E, a new antimalarial monomer, from Ancistrocladus korupensis Institute of Tropical Medicine
New monomeric (korupensamine E, 6) and dimeric (michellamines D-F, 7-9) naphthylisoquinoline alkaloids have been isolated from exracts of the tropical liana Ancistrocladus korupensis. Structures were determined by spectroanalytical methods, and stereochemistry was defined through NOE correlations, chemical degradation, and CD spectroscopy. Michellamines D-F exhibited in vitro HIV-inhibitory activity comparable to michellamine B, and ...