Fluorine local environment: from screening to drug design

Area of Science:

• Medicinal Chemistry
• Biophysics
• Structural Biology

Background:

• Fluorine incorporation is a key strategy in drug lead optimization.
• Fluorine Nuclear Magnetic Resonance (NMR) spectroscopy offers a sensitive method for biochemical and binding assays.
• Identifying interactions between drug candidates and macromolecular targets is crucial.

Purpose of the Study:

• To introduce fluorine NMR-based assays for drug discovery.
• To develop a predictive method for optimizing fluorinated drug candidates.
• To explore the utility of fluorine NMR chemical shifts and X-ray crystallography in understanding molecular interactions.

Main Methods:

• Screening libraries of fluorinated compounds using fluorine NMR.
• Analyzing fluorine NMR chemical shifts to probe the local electronic environment.
• Correlating NMR data with X-ray crystallographic structures of fluorinated molecules.
• Developing the 'rule of shielding' based on statistical analysis.

Main Results:

• Fluorine NMR assays effectively identify binding fragments and fluorophilic interactions.
• The 'rule of shielding' provides insights into the fluorine atom's environment.
• A link between chemical shift and molecular structure was established.
• The developed method aids in understanding target-ligand interactions.

Conclusions:

• Fluorine NMR spectroscopy is a versatile and efficient tool for drug discovery assays.
• The 'rule of shielding' offers a novel approach for lead optimization.
• This method can guide the design of novel chemical scaffolds targeting specific protein motifs.