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Updated: May 12, 2025
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Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
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N-Substituted Bridged Azaozonides as Promising Antimalarial Agents
Paolo Coghi1,2, Ivan A Yaremenko3, Parichat Prommana4
1School of Pharmacy, Macau University Science and Technology, Avenida Wai Long, Taipa, Macau, 999078, China.
Chemmedchem
|April 17, 2025
Summary
New aminoperoxides show potent antimalarial activity against Plasmodium falciparum. Compound 22 demonstrates high efficacy and low toxicity, offering a promising new avenue for antimalarial drug development.
Area of Science:
- Medicinal Chemistry
- Parasitology
- Drug Discovery
Background:
- Malaria remains a significant global health threat, necessitating the development of novel antimalarial agents.
- Existing treatments face challenges due to drug resistance and side effects.
- Aminoperoxides represent a potential new class of antimalarial compounds.
Purpose of the Study:
- To synthesize and evaluate a library of 45 aminoperoxides for in vitro antimalarial activity.
- To assess the cytotoxicity of these compounds against normal and cancerous human cell lines.
- To identify promising lead compounds for further antimalarial drug development.
Main Methods:
- Synthesis of bridged azaozonides, N-substituted azaozonides, and tricyclic aminoperoxides.
- In vitro testing against Plasmodium falciparum (3D7 strain).
- Cytotoxicity assays using liver (LO2, HepG2) and lung (BEAS-2B, A549) cell lines.
Main Results:
- Seven N-substituted azaozonides displayed high antimalarial activity (IC50 < 1 μM).
- Compound 22 exhibited potent antimalarial activity (IC50 = 0.07 μM) with a high selectivity index (1428).
- Most compounds showed low cytotoxicity against normal and cancer cells, with limited exceptions.
Conclusions:
- Aminoperoxides, particularly N-substituted azaozonides, are a promising scaffold for antimalarial drug discovery.
- Compound 22 demonstrates antimalarial efficacy comparable to current drugs like artemisinin and chloroquine.
- Further structural modifications of aminoperoxides could lead to novel and effective antimalarial therapies.
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