Significant Activity of Pytren-2Q, a 2‑Quinoline Polyamine Compound, against High-Concern Human Pathogenic Fungi.

Area of Science:

• Medical Mycology
• Medicinal Chemistry
• Drug Discovery

Background:

• Invasive fungal diseases (IFDs) are a growing global health threat.
• Antifungal drug resistance is increasing, necessitating new therapeutic agents.
• The World Health Organization (WHO) identified 19 priority fungal pathogens.

Purpose of the Study:

• To evaluate the in vitro antifungal activity of novel polyamine derivatives.
• To identify promising candidates for new antifungal drug development.
• To assess compounds against WHO priority fungal pathogens.

Main Methods:

• Synthesized 24 polyamine derivatives.
• Tested in vitro susceptibility of 23 fungal pathogens, including 13 WHO priority species.
• Evaluated activity against wild-type and azole-resistant Aspergillus fumigatus.

Main Results:

• A compound, Pytren-2Q (2-quinoline linked to a pyridinophane macrocycle), demonstrated strong in vitro antifungal activity.
• Pytren-2Q was particularly effective against pathogenic molds.
• High activity was observed against azole-resistant Aspergillus fumigatus strains.

Conclusions:

• Pytren-2Q exhibits significant potential as a novel antifungal agent.
• Its low toxicity, water solubility, and ease of production support further investigation.
• Pytren-2Q warrants future research for therapeutic validation against critical fungal infections.