Harnessing the cyclization strategy for new drug discovery.

Area of Science:

• Medicinal Chemistry
• Drug Discovery
• Organic Synthesis

Background:

• Designing high-affinity and specific ligands is crucial for drug discovery.
• Cyclization is a versatile strategy for generating novel chemical scaffolds.
• This approach can aid in developing new drug candidates and circumventing patent limitations.

Purpose of the Study:

• To review the application of cyclization strategies in discovering new small-molecule lead compounds.
• To highlight four main cyclization methods: fused ring, chain, spiro, and macrocyclization.
• To discuss the potential of cyclization in lead generation and proteolysis targeting chimeras (PROTAC) development.

Main Methods:

• Focus on fused ring cyclization, chain cyclization, spirocyclization, and macrocyclization.
• Summarize the use of cyclization in generating novel lead compounds.
• Review successful applications of cyclization in lead generation for various diseases.

Main Results:

• Cyclization increases structural novelty, scaffold diversity, and complexity in lead compounds.
• The strategy has shown success in identifying lead compounds against diverse therapeutic targets.
• Specific cyclization methods like fused ring, chain, spiro, and macrocyclization are effective for lead generation.

Conclusions:

• Cyclization is a powerful strategy for discovering novel small-molecule lead compounds in drug discovery.
• Challenges include synthetic difficulties, suboptimal pharmacokinetic profiles, and lack of structural data for rational design.
• Further research is needed to overcome these challenges and fully exploit cyclization's potential.