Plasmodium falciparum is the most lethal form of the genus Plasmodium which causes malaria, a ‘disease of
antiquity’. Globally it affects the health and socio-economic development of a large population especially in Sub-Saharan
Africa and Southeast Asia. The Plasmodium falciparum dihydrofolate reductase-thymidylate synthase (PfDHFR-TS) is an
important target of antimalarial drugs. Mutations at the active site of PfDHFR have resulted in decrease drug binding
affinity of DHFR-inhibitors. In the present study we selected ten compounds of Brucea mollis Wall. Ex kurz and checked
for their drug likeness using various computational tools and potential interactions with PfDHFR by molecular docking
study. Soulameanone, a quassinoid of Brucea mollis Wall. Ex kurz showed better binding affinity when compared to
pyrimethamine for both wild and quadruple mutant drug resistant PfDHFR. In addition, similar isomers of soulameanone
were screened for their drug likeness and to study their interactions with PfDHFR. Twenty three compounds showed
better binding affinity compared to soulameanone.
Keywords: ADME, antiplasmodial, Brucea mollis, docking, PfDHFR.
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