DNA Compatible Multistep Synthesis and Applications to DNA Encoded Libraries.

Area of Science:

• Medicinal Chemistry
• Synthetic Organic Chemistry
• Biotechnology

Background:

• DNA-encoded libraries (DELs) are crucial for discovering novel small molecules that interact with target proteins.
• The chemical diversity of DELs is limited by DNA-compatible synthetic reactions.
• High-throughput synthesis is essential for generating diverse DELs.

Purpose of the Study:

• To provide optimized protocols for 24 chemical reactions suitable for high-throughput DEL synthesis.
• To expand the chemical space accessible for DEL generation.
• To facilitate the discovery of potent and drug-like molecules.

Main Methods:

• Detailed protocols for multistep synthesis of heterocyclic scaffolds including benzimidazoles, imidazolidinones, quinazolinones, isoindolinones, thiazoles, and imidazopyridines.
• Protocols for key chemical transformations such as BOC deprotection (pH-neutral), carbamylation, and Sonogashira coupling.
• Step-by-step synthesis of functionalized DELs from trichloronitropyrimidine and trichloropyrimidine scaffolds.

Main Results:

• Successful optimization of 24 reactions for high-throughput DEL production.
• Demonstrated synthesis of diverse heterocyclic compounds and functionalized DELs.
• Expansion of synthetic methodologies applicable to DEL generation.

Conclusions:

• The provided protocols significantly enhance the capacity for generating diverse DNA-encoded libraries.
• These methods enable the efficient synthesis of novel chemical matter for drug discovery.
• The optimized reactions overcome limitations in DEL chemical diversity and facilitate high-throughput screening.