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In vitro inhibition of liver forms of the rodent malaria parasite Plasmodium berghei by naphthylisoquinoline alkaloids--structure-activity relationships of dioncophyllines A and C and ancistrocladine Institute of Tropical Medicine
Naphthylisoquinoline alkaloids are derived from Dioncophyllaceae and Ancistrocladaceae species and comprise a new class of promising antimalarials with a demonstrated potential against asexual erythrocytic Plasmodium falciparum and P. berghei stages in vitro. We report herein the pronounced activity of pure naphthylisoquinoline alkaloids against exoerythrocytic malaria parasites. P. berghei-infected human hepatoma cells (Hep G2) were incubated ...
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 ...