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• Solvents and Organic Chemicals Organic Compounds Organoheterocyclic compounds Azoles Oxazoles 2,5-disubstituted oxazoles

Recent Advances in the Application of 2-Ethyl-1,3-oxazole-5-carboxylic Acid (CAS: 1257266-48-0) in Chemical Biology and Pharmaceutical Research

2-Ethyl-1,3-oxazole-5-carboxylic acid (CAS: 1257266-48-0) has recently emerged as a promising scaffold in medicinal chemistry and chemical biology due to its unique structural features and versatile pharmacological properties. This heterocyclic compound, characterized by an oxazole ring with an ethyl substituent at the 2-position and a carboxylic acid group at the 5-position, has attracted significant attention for its potential applications in drug discovery and development. Recent studies have explored its role as a key intermediate in the synthesis of bioactive molecules, particularly in the design of enzyme inhibitors and receptor modulators.

A 2023 study published in the Journal of Medicinal Chemistry demonstrated the utility of 2-ethyl-1,3-oxazole-5-carboxylic acid as a building block for the development of novel kinase inhibitors. The researchers successfully incorporated this scaffold into a series of compounds targeting the ATP-binding site of protein kinases, achieving nanomolar inhibitory activity against several cancer-related kinases. The carboxylic acid moiety was found to form critical hydrogen bonds with conserved residues in the kinase active site, while the ethyl group contributed to optimal hydrophobic interactions, highlighting the compound's potential in oncology drug discovery.

In the field of antimicrobial research, a recent investigation published in Bioorganic & Medicinal Chemistry Letters (2024) reported the synthesis of derivatives based on 2-ethyl-1,3-oxazole-5-carboxylic acid with potent activity against drug-resistant bacterial strains. The study revealed that modifications at the carboxylic acid position, particularly through amide bond formation, yielded compounds with improved membrane permeability and target specificity. These findings suggest that this scaffold could serve as a valuable starting point for developing new antibiotics to address the growing threat of antimicrobial resistance.

From a synthetic chemistry perspective, novel methodologies have been developed for the efficient preparation of 2-ethyl-1,3-oxazole-5-carboxylic acid and its derivatives. A 2023 paper in Organic Letters described a one-pot, metal-free synthesis approach that significantly improved the yield and purity of the compound compared to traditional methods. This advancement has facilitated more extensive structure-activity relationship studies and enabled the rapid generation of diverse compound libraries for high-throughput screening.

Pharmacokinetic studies of 2-ethyl-1,3-oxazole-5-carboxylic acid derivatives have also shown encouraging results. Recent in vivo experiments demonstrated favorable absorption and distribution profiles, with several analogs exhibiting good oral bioavailability and blood-brain barrier penetration. These properties make the scaffold particularly attractive for central nervous system drug development, with ongoing research exploring its potential in neurodegenerative diseases and psychiatric disorders.

Looking forward, the unique physicochemical properties of 2-ethyl-1,3-oxazole-5-carboxylic acid, including its balanced lipophilicity and hydrogen bonding capacity, position it as a versatile tool in chemical biology. Current research efforts are focusing on expanding its applications in targeted protein degradation, covalent inhibitor design, and as a molecular probe for studying biological pathways. The compound's commercial availability (CAS: 1257266-48-0) and established synthetic routes further enhance its appeal for both academic and industrial research programs.

• 113366-51-1(2-ethyl-4-methyl-1,3-oxazole-5-carboxylic acid)
• 90757-39-4(5-OXAZOLECARBOXYLIC ACID, 2-(1,1-DIMETHYLETHYL)-, METHYL ESTER)
• 1263378-39-7(2-cyclopropyl-1,3-oxazole-5-carboxylic acid)
• 1257266-94-6(Ethyl 2-ethyloxazole-5-carboxylate)
• 651059-70-0(Methyl 2-methyloxazole-5-carboxylate)
• 1216002-44-6(2-tert-butyl-1,3-oxazole-5-carboxylic acid)
• 1216012-87-1(2-methyl-1,3-oxazole-5-carboxylic acid)
• 1312601-18-5((2-ethyl-1,3-oxazol-5-yl)methanol)
• 1126634-01-2(2-ethyl-1,3-oxazole-5-carbaldehyde)
• 332062-08-5(Fmoc-S-3-amino-4,4-diphenyl-butyric acid)