CAS: 67561-96-0—Thiosaccharide building blocks with great potential in glycochemistry and drug discovery

2-acetamido-2-deoxy-5-thio-α-D-glucopyranose is a thiomonosaccharide derivative with a unique structure, which is increasingly showing its key value in glycochemistry, glycobiology and innovative drug research and development. By replacing the oxygen atom in the traditional sugar ring (5-oxygen → 5-sulfur) with a sulfur atom, this compound not only retains the basic skeleton of the sugar molecule, but also gives it a series of excellent chemical and biological properties, becoming an important starting point for the development of new enzyme inhibitors, sugar mimics and biological probes.

Chemical Information

Chemical name: 2-acetylamino-2-deoxy-5-thio-α-D-glucopyranose

Common name: 5-Thio-N-acetylglucosamine (analog)

Chemical formula: C₈H₁₅NO₅S

Molecular weight: 237.27 g/mol

CAS number: 67561-96-0

Category: Monosaccharides

Structural features

The core feature of this molecule is that the 5-position oxygen in the sugar ring is replaced by a sulfur atom. This seemingly subtle change brings multiple improvements in properties:

Enhanced stability: Compared with C–O bonds, C–S bonds have stronger chemical stability and resistance to enzymatic degradation. They especially show higher resistance to hydrolases such as glycosidases, extending their half-life in biological systems.

Conformation and electronic effects: The larger atomic radius and lower electronegativity of the sulfur atom can slightly change the conformational balance and charge distribution of the sugar ring, thereby affecting its interaction mode with proteins and receptors, providing a basis for the rational design of high-affinity ligands.

Dual functionalization potential: The sulfur atom can be used as a "handle" for further derivatization, and various functional groups or linkers can be introduced through reactions such as oxidation and alkylation to facilitate the construction of glycoconjugates or probe molecules.

Main applications and advantages

An ideal backbone for glycosylase inhibitors

Many diseases (eg, cancer, metabolic diseases, infectious diseases) are associated with abnormal glycosylation or glycohydrolase activity. It can be used as a key intermediate for the design of glycosidase/glycosyltransferase inhibitors. Its thioglycan ring can simulate the natural glycosylation transition state and stably bind to the active center of the enzyme, but is difficult to be hydrolyzed, providing new ideas for the development of anti-tumor, anti-viral or metabolic disease treatment drugs.

Development of carbohydrate mimetics and carbohydrate drugs

Among carbohydrate drugs, thioglycans are often used to improve metabolic stability and improve oral bioavailability. It can be used as a sulfur analog of N-acetylglucosamine (GlcNAc), which can be used to construct cell surface sugar mimics to regulate cell recognition, immune response and other processes; it can also be used as a component of carbohydrate vaccines to enhance the stability and immunogenicity of antigens.

Chemical Biology and Diagnostic Tool Development

Probes and labeling tools: Sulfur atoms facilitate specific attachment to fluorophores, biotin, or affinity tags for tracking sugar metabolic pathways, visualizing sugar-protein interactions, or enriching sugar-binding proteins.

Disease marker research: Certain thioglycoside derivatives exhibit abnormal accumulation in tumor cell glucose metabolism and may serve as potential imaging agents or precursors for diagnostic markers.

New materials and synthetic intermediates

In synthetic chemistry, this compound is an excellent building block for building thio-oligosaccharides, cyclodextrin analogs, or sugar-metal complexes. Its special solubility and coordination ability also provide the possibility to develop functional sugar-based materials (such as targeting carriers and biosensors).

Conclusion

2-acetamido-2-deoxy-5-thio-α-D-glucopyranose is not only an exquisite transformation in sugar chemistry, but also a molecular bridge connecting basic research and innovative applications. From the study of enzyme mechanisms to the design of new inhibitors, from the optimization of carbohydrate drugs to the development of diagnostic tools, its unique sulfo structure provides us with a new dimension to explore life processes and disease intervention.

The above information is provided by the editor of KASONS and is for scientific research only.