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Exploring USFDA-Approved Imidazole-Based Small Molecules in Drug Discovery: A Mini Perspective
Sonali Gupta1,2, M Arockia Babu3, Roshan Kumar4,5
1Pharmaceutical Chemistry Division, Department of Pharmaceutical Sciences, Gurukul Kangri (Deemed to be University), Haridwar, India.
Chemistry & Biodiversity
|March 10, 2025
Summary
The imidazole ring is crucial in drug discovery, with recent approvals for anti-infectives and other conditions. Key findings include common metabolic pathways and chemical structures of approved imidazole-based drugs.
Area of Science:
- Medicinal Chemistry
- Pharmacology
- Drug Discovery
Background:
- The imidazole ring is a vital scaffold in medicinal chemistry, frequently incorporated into drug molecules.
- Recent drug approvals highlight the continued importance of imidazole derivatives in therapeutic applications.
Purpose of the Study:
- To analyze key drug approvals featuring the imidazole ring between 2013 and 2024.
- To investigate the pharmacological, metabolic, chemical, and synthetic characteristics of these approved drugs.
- To explore the role of imidazole as a bioisostere and its receptor-ligand interactions.
Main Methods:
- Review of drug approval data (2013-2024) focusing on imidazole-containing drugs.
- Pharmacological profiling, including therapeutic areas and dosage forms.
- Analysis of metabolic pathways (CYP3A4, CYP3A5), excretion routes (fecal), and chemical structures (heterocycles, substitutions, chirality).
- Examination of synthetic routes, bioisosteric utility, and receptor-ligand interactions.
Main Results:
- Out of 20 approved drugs, 45% were anti-infectives, with others targeting genetic, metabolic, endocrine, oncologic, cardiovascular, gastrointestinal, and neurological disorders.
- Solid dosage forms and oral administration were predominant.
- CYP3A4 and CYP3A5 were key metabolic enzymes, with fecal excretion being the major route.
- Pyrrolidine/pyrrole and indole were common heterocycles; amide, amine, and fluoro groups were frequent substitutions; 2,4-substitution patterns and chirality were observed.
Conclusions:
- The imidazole ring remains a versatile and significant scaffold in modern drug discovery, particularly for anti-infective agents.
- Understanding the metabolic, chemical, and interaction profiles of imidazole-based drugs aids in the design of future therapeutics.
- This review provides valuable insights for medicinal chemists and researchers in optimizing imidazole-containing drug candidates.
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