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Synthesis and SAR of 1,2,3,4-Tetrahydroisoquinoline-Based CXCR4 Antagonists
Robert J Wilson1, Edgars Jecs1, Eric J Miller1
1Department of Chemistry, Emory University, 1515 Dickey Drive NE, Atlanta, Georgia 30322, United States.
Abstract:
CXCR4 is the most common chemokine receptor expressed on the surface of many cancer cell types. In comparison to normal cells, cancer cells overexpress CXCR4, which correlates with cancer cell metastasis, angiogenesis, and tumor growth. CXCR4 antagonists can potentially diminish the viability of cancer cells by interfering with CXCL12-mediated pro-survival signaling and by inhibiting chemotaxis. Herein, we describe a series of CXCR4 antagonists that are derived from (S)-5,6,7,8-tetrahydroquinolin-8-amine that has prevailed in the literature. This series removes the rigidity and chirality of the tetrahydroquinoline providing 2-(aminomethyl)pyridine analogs, which are more readily accessible and exhibit improved liver microsomal stability. The medicinal chemistry strategy and biological properties are described.
Insights
New CXCR4 antagonists derived from 2-(aminomethyl)pyridine offer improved stability and accessibility compared to older tetrahydroquinoline-based compounds. These novel agents show promise for cancer therapy by targeting cancer cell proliferation and spread.
Area of Science:
- Oncology
- Medicinal Chemistry
- Molecular Biology
Background:
- Chemokine receptor CXCR4 is overexpressed on various cancer cells.
- CXCR4 overexpression correlates with cancer metastasis, angiogenesis, and tumor growth.
- CXCR4 antagonists can potentially reduce cancer cell viability by disrupting pro-survival signaling and chemotaxis.
Purpose of the Study:
- To develop novel CXCR4 antagonists with improved properties.
- To explore 2-(aminomethyl)pyridine analogs as alternatives to rigid tetrahydroquinoline structures.
- To evaluate the medicinal chemistry strategy and biological activity of these new compounds.
Main Methods:
- Synthesis of 2-(aminomethyl)pyridine analogs.
- Medicinal chemistry optimization.
- Evaluation of biological properties, including liver microsomal stability and anti-cancer activity.
Main Results:
- Developed novel CXCR4 antagonists based on 2-(aminomethyl)pyridine.
- Achieved improved liver microsomal stability compared to previous analogs.
- Demonstrated potential for diminishing cancer cell viability through targeted inhibition.
Conclusions:
- 2-(aminomethyl)pyridine analogs represent a promising scaffold for CXCR4 antagonist development.
- These novel compounds offer advantages in accessibility and stability for potential cancer therapeutics.
- Further investigation is warranted to explore their full therapeutic potential in cancer treatment.
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