Synthesis and antifungal assessment of imidazole-containing compounds: A comprehensive study integrating experimental and computational techniques
Abstract
The emergence of resistant fungal strains has created an urgent need for novel antifungal agents with improved efficacy and safety profiles. In this study, we report the design, synthesis, and evaluation of a new series of imidazole-containing thiazole derivatives as potential anti-fungal agents. The compounds were synthesized via a two-step process involving thiourea formation, followed by microwave-assisted cyclization with substituted phenacyl bromides. The resulting products, mostly semi-liquid in nature, were characterized by high-resolution mass spectrometry (HRMS) and nuclear magnetic resonance (NMR) spectroscopy. The synthesized derivatives were tested in vitro against clinically relevant fungal pathogens, including Candida albicans, Candida glabrata, Candida parapsilosis, and Candida krusei. Structure-activity relationship (SAR) analysis indicated that the antifungal activity was influenced by the electronic and steric properties of the aromatic substituents. Compound 2b, bearing a para-cyano group, exhibited the highest potency, with MIC50 values of 0.98 µg/mL against C. albicans and C. parapsilosis, comparable to standard antifungal agents. Molecular docking studies supported these findings, revealing favorable interactions with fungal target sites, and ADME predictions suggested drug-like properties. This multidisciplinary approach led to the identification of imidazole-based compounds with potent anti-fungal properties, laying the groundwork for further optimization and preclinical development.
Keywords
References
- Maccallini C, Gallorini M, Sisto F, Akdemir A, Ammazzalorso A, De Filippis B, Fantacuzzi M, Giampietro L, Carradori S, Cataldi A, Amoroso R. New azolyl-derivatives as multitargeting agents against breast cancer and fungal infections: synthesis, biological evaluation and docking study. J Enzyme Inhib Med Chem. (2021);36(1):1631-44. https://doi.org/10.1080/14756366.2021.1954918.
- Wang YN, Bheemanaboina RRY, Cai GX, Zhou CH. Novel purine benzimidazoles as antimicrobial agents by regulating ROS generation and targeting clinically resistant Staphylococcus aureus DNA groove. Bioorg Med Chem Lett. (2018);28(9):1621-8. https://doi.org/10.1016/j.bmcl.2018.03.046.
- Ansari MA, Fatima Z, Hameed S. Antifungal action of methylene blue involves mitochondrial dysfunction and disruption of redox and membrane homeostasis in C. albicans. Open Microbiol J. (2016);10(1):12-22. https://doi.org/ 10.2174/1874285801610010012.
- Gintjee T, Donnelley M, Thompson G. Aspiring antifungals: Review of current antifungal pipeline developments. Journal of Fungi. (2020);6(1):28. https:// doi.org/10.3390/jof6010028.
- Xu H, Su X, Guo M bi, An R, Mou Y hua, Hou Z, Guo Ch. Design, synthesis, and biological evaluation of novel miconazole analogues containing selenium as potent antifungal agents. Eur J Med Chem. (2020); 198:112360. https://doi.org/10.1016/j.ejmech.2020.112360.
- Negri M, Salci T, Shinobu-Mesquita C, Capoci I, Svidzinski T, Kioshima E. Early state research on antifungal natural products. Molecules. (2014);19(3):2925-56. https://doi.org/10.3390/molecules19032925.
- Bondaryk M, Kurzątkowski W, Staniszewska M. Antifungal agents commonly used in the superficial and mucosal candidiasis treatment: mode of action and resistance development. Advances in Dermatology and Allergology. (2013); 5:293-301. https://doi.org/10.5114/pdia.2013.38358.
- Srinivasan A, Lopez-Ribot JL, Ramasubramanian AK. Overcoming antifungal resistance. Drug Discov Today Technol. (2014); 11:65-71. https://doi.org/10.1016/j.ddtec.2014.02.005.
Details
Primary Language
English
Subjects
Molecular Docking, Pharmaceutical Chemistry
Journal Section
Research Article
Authors
Derya Osmaniye
0000-0002-0499-436X
Türkiye
Publication Date
May 1, 2026
Submission Date
June 4, 2025
Acceptance Date
August 12, 2025
Published in Issue
Year 2026 Volume: 5 Number: 1