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Triazolophthalazines: Easily Accessible Compounds with Potent Antitubercular Activity
Damien Veau1,2, Serhii Krykun1, Giorgia Mori3
1Laboratoire de Synthèse et Physicochimie de Molécules d'Intérêt Biologique (SPCMIB), CNRS-UMR5068, Université Paul Sabatier-Toulouse III, 118 Route de Narbonne, 31062, Toulouse Cedex 9, France.
New triazolophthalazine compounds show potent activity against tuberculosis (TB), including multidrug-resistant strains. These novel agents offer a promising alternative for developing new TB treatments.
Area of Science:
- Medicinal Chemistry
- Organic Synthesis
- Microbiology
Background:
- Tuberculosis (TB) is a leading global cause of mortality.
- The rise of multidrug-resistant TB (MDR-TB) necessitates novel therapeutic strategies.
- Existing treatments face challenges due to resistance and toxicity.
Purpose of the Study:
- To explore novel 3-substituted triazolophthalazines as potential anti-TB agents.
- To evaluate the antimycobacterial activity and cytotoxicity of synthesized compounds.
- To identify new therapeutic leads for combating drug-susceptible and drug-resistant TB.
Main Methods:
- Synthesis of novel 3-substituted triazolophthalazines from hydralazine hydrochloride.
- Antimycobacterial activity testing against Mycobacterium tuberculosis (M.tb) H37 Rv strain.
- Cytotoxicity evaluation using HCT116 human cell lines.
- Activity assessment against various multidrug-resistant M.tb strains.
Main Results:
- Four synthesized compounds exhibited potent antimycobacterial activity (MIC <10 μg/mL).
- No observed cytotoxicity against HCT116 cells (IC50 >100 μm).
- The most potent compounds demonstrated significant activity against multidrug-resistant M.tb strains.
Conclusions:
- 3-substituted triazolophthalazines are easily synthesized and possess significant antimycobacterial properties.
- These compounds show promise as novel therapeutic leads for TB, including MDR-TB.
- The distinct mode of action suggests potential to overcome existing resistance mechanisms.
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