Privileged structures: efficient chemical "navigators" toward unexplored biologically relevant chemical spaces

Area of Science:

• Medicinal Chemistry
• Chemical Biology
• Drug Discovery

Background:

• Traditional drug discovery faces challenges with "undruggable" targets.
• Diversity-oriented synthesis (DOS) generates diverse small molecule libraries for identifying bioactive compounds.
• A key challenge is balancing molecular diversity with biological relevance in synthesized libraries.

Purpose of the Study:

• To introduce privileged substructure-based DOS (pDOS) for constructing biologically relevant polyheterocyclic compound libraries.
• To demonstrate how incorporating privileged substructures enhances the specificity of drug-like molecules.
• To highlight pDOS as an efficient strategy for exploring biologically relevant chemical spaces.

Main Methods:

• Development of the privileged substructure-based DOS (pDOS) strategy.
• Incorporation of privileged substructures (e.g., benzopyran, pyrimidine, oxopiperazine) into polyheterocyclic scaffolds.
• Utilizing fluorescence difference in two-dimensional gel electrophoresis for target biomolecule identification.

Main Results:

• pDOS enables the construction of polyheterocyclic compound libraries with high biological relevance.
• Privileged substructures act as chemical "navigators" toward specific biological targets.
• Examples of pDOS-derived compounds show exceptional specificity and bioactivity.

Conclusions:

• pDOS is an efficient strategy for designing drug-like small molecules with improved biological relevance and diversity.
• Privileged substructures are crucial for enhancing the specificity of small molecules for therapeutic applications.
• pDOS offers a promising approach for future chemical biology research and drug discovery efforts.