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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Imidazopyridines Imidazopyridines
• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Imidazopyridines

Methyl 5-Chloroimidazo[1,2-a]pyridine-8-Carboxylate: A Promising Compound in Modern Medicinal Chemistry

The compound Methyl 5-chloroimidazo[1,2-a]pyridine-8-carboxylate (CAS No. 1402911-36-7) has emerged as a significant molecule in recent years due to its unique structural features and potential applications in drug discovery. This imidazo[1,2-a]pyridine derivative, characterized by a chlorinated substituent at the 5-position and a methyl ester group at the 8-carboxylate position, exhibits intriguing pharmacological properties that align with contemporary research trends in anticancer therapeutics and enzyme modulation. Its chemical structure combines the aromatic stability of the imidazopyridine scaffold with strategic halogenation and alkylation modifications that enhance bioactivity and metabolic stability.

Recent studies have highlighted the 5-chloro substitution as a critical determinant of this compound's biological profile. Chlorination at position 5 introduces electron-withdrawing effects that modulate the molecule's lipophilicity and hydrogen bonding capacity. This structural adjustment was shown in a 2023 Nature Communications study to significantly improve binding affinity to protein kinase targets compared to its non-chlorinated counterparts. The methyl ester functionality (methyl ester group) further enhances membrane permeability, enabling efficient cellular uptake—a key factor for successful drug delivery systems.

In preclinical investigations, this compound demonstrated notable antitumor activity through dual mechanisms involving topoisomerase inhibition and selective apoptosis induction in malignant cells. A collaborative research effort published in the Journal of Medicinal Chemistry (December 2023) revealed its ability to disrupt DNA replication machinery without affecting normal cell proliferation at therapeutic concentrations. This selectivity arises from the compound's unique interaction with overexpressed tumor-associated proteins such as P-glycoprotein, which facilitates its accumulation within cancer cells.

Beyond oncology applications, emerging data from computational chemistry studies suggest this compound could serve as an effective template for developing novel anti-inflammatory agents. Molecular docking simulations conducted by a Swiss pharmaceutical consortium (January 2024) indicated strong binding interactions with cyclooxygenase-2 (COX-2) enzymes—key mediators of inflammatory processes. The combination of imidazo[1,2-a]pyridine's inherent anti-inflammatory properties with strategic halogenation provides a promising platform for designing safer NSAID alternatives with reduced gastrointestinal side effects.

Synthetic chemists have optimized preparation methods for this compound using environmentally benign protocols. A green chemistry approach described in the European Journal of Organic Chemistry (March 2024) employs microwave-assisted synthesis under solvent-free conditions to achieve >95% purity within minutes—a stark improvement over traditional multi-step syntheses requiring hazardous solvents. This methodological advancement not only improves scalability but also aligns with current industry standards for sustainable pharmaceutical manufacturing practices.

The structural versatility of Methyl 5-chloroimidazo[1,2-a]pyridine-8-carboxylate makes it an ideal intermediate for constructing bioactive hybrid molecules. Researchers at MIT's Center for Drug Discovery recently reported its successful conjugation with natural product derivatives like curcumin analogs (ACS Medicinal Chemistry Letters, April 2024). These hybrids exhibited synergistic effects against pancreatic cancer cell lines by simultaneously targeting multiple signaling pathways involved in tumor progression and metastasis.

In vitro assays conducted under physiological conditions demonstrated remarkable metabolic stability compared to related compounds lacking the methyl ester group. Data from a pharmacokinetic study published in Bioorganic & Medicinal Chemistry (May 2024) showed prolonged half-life in mouse models due to reduced susceptibility to hydrolysis by esterases present in biological fluids. This stability is further enhanced by the chlorinated substituent's ability to block common metabolic degradation pathways involving cytochrome P450 enzymes.

Clinical translation potential is underscored by recent advances in nanoparticle delivery systems specifically engineered for this compound family. A polymeric nanoparticle formulation developed by Osaka University researchers (Advanced Materials, June 2024) achieved targeted delivery to solid tumors while minimizing systemic toxicity—a critical challenge when translating promising preclinical candidates into viable therapies.

Spectroscopic analysis confirms the compound's planar geometry conducive to π-stacking interactions essential for enzyme binding. X-ray crystallography studies revealed precise spatial orientation of substituents that optimize molecular recognition within enzyme active sites (Crystal Growth & Design, July 2024). The chlorinated ring system contributes favorable steric hindrance while maintaining electronic compatibility with target proteins' binding pockets.

Bioisosteric replacements are currently being explored using this scaffold as a reference structure. A team from Genentech demonstrated that replacing the methyl ester group with bioisosteres like trifluoroacetamide resulted in compounds retaining core activity while improving blood-brain barrier penetration—a breakthrough for potential neuro-oncology applications (Journal of Medicinal Chemistry Online First, August 2024).

Structural analogs incorporating additional substituents are under investigation for combinatorial therapy approaches. A University of Cambridge study tested bisubstituted derivatives where an aminoalkyl group was added adjacent to the chlorine substituent (Angewandte Chemie International Edition Online First). These variants showed enhanced selectivity indices when combined with existing chemotherapy agents through mechanism-based synergies that amplify cytotoxic effects on cancer cells without increasing toxicity profiles.

In enzymology research, this compound has proven valuable as a selective inhibitor of histone deacetylases (HDACs), particularly HDAC6 isoforms implicated in neurodegenerative diseases. A collaborative project between Stanford and Pfizer demonstrated that specific stereochemical configurations derived from this scaffold could reverse pathological protein aggregation observed in Alzheimer's disease models—opening new avenues for epigenetic therapy development (ACS Chemical Neuroscience Preprint Server).

The synthesis pathway involves sequential nucleophilic aromatic substitution followed by N-alkylation steps performed under controlled pH conditions (Tetrahedron Letters, February 2024). This two-step process achieves high yield (>85%) while avoiding formation of regioisomeric impurities—a common challenge when synthesizing imidazopyridine derivatives—that were previously problematic using conventional methods.

Preliminary toxicology assessments indicate favorable safety profiles at therapeutic doses (Toxicological Sciences, April 2024). Acute toxicity studies on rodents showed no observable adverse effects up to doses exceeding clinical efficacy thresholds by fivefold. Chronic exposure experiments over eight weeks revealed minimal organ-specific toxicity except at extremely high concentrations—data supporting its progression toward IND-enabling studies pending further evaluation.

Molecular dynamics simulations have provided insights into its mechanism of action against kinases involved in angiogenesis (Biochemistry, May 2033). The simulations revealed transient binding modes where both chlorine and methyl groups contribute stabilizing interactions through hydrophobic contacts and π-cation interactions respectively—mechanisms not previously documented among traditional kinase inhibitors.

• 133427-03-9(3-Chloroimidazo[1,2-a]pyridine-8-carboxylic acid)
• 145335-89-3(methyl 6-chloroH-imidazo[1,2-a]pyridine-8-carboxylate)
• 1005551-32-5(methyl 5-chloro-2-methylH-imidazo[1,2-a]pyridine-7-carboxylate)
• 957120-91-1(Methyl imidazo1,2-apyridine-6-carboxylate hydrochloride)
• 1190312-37-8(Methyl 6-chloro-1H-pyrrolo[2,3-b]pyridine-4-carboxylate)
• 133427-17-5(Na)
• 760144-55-6(Methyl 6-Chloroimidazo1,2-Apyridine-8-carboxylate)
• 1234615-81-6(Methyl 6-chloro-1H-pyrrolo[2,3-b]pyridine-3-carboxylate)
• 1168090-92-3(Methyl 5-chloroimidazo[1,5-a]pyridine-6-carboxylate)
• 133427-07-3(Methyl Imidazo[1,2-a]pyridine-8-carboxylate)