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New benzimidazolequinones as trypanosomicidal agents
Claudia López-Lira1, Ricardo A Tapia1, Alejandra Herrera2
1Facultad de Química y de Farmacia, Pontificia Universidad Católica de Chile, Santiago 6094411, Chile.
Bioorganic Chemistry
|April 2, 2021
Summary
New benzimidazolequinones show potent activity against Trypanosoma cruzi, the parasite causing Chagas disease. Compound 11a is highly effective, offering a promising new avenue for treating this neglected tropical disease.
Area of Science:
- Medicinal Chemistry
- Parasitology
- Drug Discovery
Background:
- Trypanosoma cruzi causes Chagas disease, a neglected tropical illness.
- Existing treatments for Chagas disease have limitations.
Purpose of the Study:
- To design and synthesize novel 2-phenyl(pyridinyl)benzimidazolequinones and their 5-phenoxy derivatives.
- To evaluate these compounds as potential anti-Trypanosoma cruzi agents.
Main Methods:
- In vitro evaluation against epimastigote and trypomastigote forms of Trypanosoma cruzi.
- Molecular docking studies to predict drug targets.
Main Results:
- Replacing benzene with imidazole in naphthoquinone enhanced trypanosomicidal activity.
- Compounds 11a-c demonstrated potent activity.
- Compound 11a exhibited an IC50 of 0.65 μM against trypomastigotes, 15 times more potent than nifurtimox.
- Molecular docking suggested interaction with trypanothione reductase and Old Yellow Enzyme.
Conclusions:
- Benzimidazolequinones are promising candidates for Chagas disease treatment.
- Compound 11a shows superior activity and a potential multitarget profile.
- Further research into these compounds could lead to new therapies for Chagas disease.
