Novel Potent Selective Orally Active S1P5 Receptor Antagonists

Area of Science:

• Pharmacology
• Neuroscience
• Immunology

Background:

• Sphingosine-1-phosphate (S1P) receptors are crucial for immune and central nervous system (CNS) cell regulation.
• Limited understanding of S1P receptor 5 (S1P5) function is due to a lack of specific modulators with drug-like properties.

Purpose of the Study:

• To discover and optimize novel, potent, and selective antagonists for the S1P5 receptor.
• To identify a tool compound for in vivo studies of S1P5 modulation.

Main Methods:

• Medicinal chemistry optimization of a novel series of S1P5 antagonists.
• Characterization of compound selectivity and druglike properties.
• Evaluation of brain penetration and oral bioavailability.

Main Results:

• Discovery of a novel series of potent and selective S1P5 antagonists.
• Identification of compound 15 as an orally active and brain-penetrant tool compound.
• Compound 15 exhibits suitable properties for in vivo pharmacological studies.

Conclusions:

• The developed S1P5 antagonists represent valuable tools for investigating S1P5 roles in biological systems.
• Compound 15 provides a means to explore S1P5 pharmacology in the CNS and immune compartments.
• This work overcomes limitations in S1P5 modulation, enabling further research into its physiological functions.