Peracetylated 5-thio-N-acetylglucosamine, a key building block in drug development 67561-97-1

2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-5-thio-α-D-glucopyranose is an important class of modified monosaccharide derivatives in the field of glycochemistry and glycopharmaceutical research. As the structural precursor and protected form of 5-glucosinolate, it is not only a key tool molecule for basic research on glycobiology, but also provides an irreplaceable chemical building block for the development of new glycosylation inhibitors, glycomimetic drugs and diagnostic probes.

Chemical Information

Chemical name: 2-acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-5-thio-α-D-glucopyranose

Common name: Peracetylated 5-thio-N-acetylglucosamine (α configuration)

Chemical formula: C₁₆H₂₃NO₉S

Molecular weight: 405.42 g/mol

CAS number: 67561-97-1

Category: Monosaccharides

Structural features

This molecule has three key modifications on the classic glucose skeleton, giving it unique chemical and biological properties:

5-Thio modification: The most distinctive modification in the molecule is to replace the oxygen atom (O5) in the pyran ring with a sulfur atom to form "5-thio sugar". This change significantly changes the electron distribution, conformational flexibility and interaction mode of the molecule with other biomolecules. The sulfur atom is larger and less polar, and is often used to simulate the transition state of glycosidic bonds or inhibit glycosidase enzymes.

Full acetylation protection: The hydroxyl groups at positions 1, 3, 4 and 6 are all protected by acetyl groups. This not only improves the stability and fat solubility of the molecule and facilitates storage and reaction operations, but the acetyl group at position 1 can be used as a leaving group to facilitate subsequent selective glycosidation reactions and the construction of more complex oligosaccharides or glycoconjugates.

2-acetamido-2-deoxy: The original hydroxyl group is replaced with an acetamide group at the 2-position, making it a thioanalog of N-acetylglucosamine (GlcNAc). GlcNAc is the core unit of protein O-GlcNAc glycosylation modification and participates in various key biological processes such as cell signal transduction and transcriptional regulation. Therefore, this derivative is a valuable probe for studying related pathways.

Main applications and advantages

1. Core intermediates for the development of glycosylation inhibitors

5-Thiosaccharides are known to be potent glycosidase inhibitors. Thiosaccharide drugs synthesized from it can be used to treat viral diseases (such as influenza, HIV), diabetes (alpha-glucosidase inhibitors), and even some cancers by irreversibly or powerfully combining with the active center of glycosidase.

2. Ideal tool for chemical glycobiology research

Mechanism study: used to explore the mechanism of action of glycosidases and glycosyltransferases, and to clarify how sulfur atoms affect the recognition and catalysis of enzymes and substrates.

Probe synthesis: It can be used as a starting point for the synthesis of bioorthogonal probes, fluorescently labeled sugar probes, or photoaffinity labeled probes for the visual study of sugar metabolism and glycoprotein interactions in living cells.

3. Novel glycomimetics and drug delivery systems

Its structure provides a framework for the design of metabolically stable glycomimetics. In medicinal chemistry, it can be used to modify existing drug molecules to improve their water solubility, targeting or resistance to enzymatic degradation. In addition, thiosaccharide units have also been explored to construct new nanocarriers or targeting ligands.

4. Synthetic building blocks of complex oligosaccharides and glycoconjugates

In organic synthesis, this fully acetylated derivative has clear reactivity and is an important starting material for the efficient and stereoselective synthesis of complex molecules such as oligosaccharides, glycopeptides, and glycolipids containing thiosugar bonds. These molecules are in huge demand in areas such as vaccine development (such as bacterial polysaccharide vaccine simulation) and intercellular communication research.

Conclusion

2-Acetamido-1,3,4,6-tetra-O-acetyl-2-deoxy-5-thio-α-D-glucopyranose is much more than a simple monosaccharide derivative. It is a bridging molecule between basic glycoscience and cutting-edge drug development. From decoding disease-related glycobiological mechanisms to developing next-generation enzyme inhibitors and therapeutic glycomimetics, its value runs through the entire chain from discovery to application.

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