6-Amino-6-deoxy-L-galactose acetyl derivative: a tool for glycobiology research 1358739-10-2

6-amino-6-deoxy-1,2,3,4-tetra-O-acetyl-L-galactose is a chemically modified carbohydrate derivative with important research value. As a structural analog of galactose, its specific amino substitution and peracetylation protection design enable it to exhibit unique functions and application potential in the fields of glycochemistry, glycobiology and carbohydrate drug development. This molecule provides a key chemical and biochemical tool for in-depth exploration of carbohydrate metabolism, recognition processes and glycoconjugate functions.

Chemical Information

Chemical name: 1,2,3,4-Tetra-O-acetyl-6-amino-6-deoxy-L-galactose

Common name: 6-Amino-6-deoxy-1,2,3,4-tetraacetate-L-galactose

Chemical formula: C₁₄H₁₉NO₁₀

Molecular weight: 361.3 g/mol

CAS number: 1358739-10-2

Category: Metabolic Probe Reagents

Structural features

This molecule is a product of precise engineering modification of natural L-galactose. Its core structural features lie in two key modifications:

6-position specific amination: On the 6-position carbon of the galactopyran ring, the hydroxyl group is replaced by an amino group (-NH₂) to form a 6-amino-6-deoxy structure. This modification fundamentally changes the chemical and biological properties of this site by converting the alcoholic hydroxyl group into a more reactive, protonatable amino group that can participate in specific molecular recognition.

Comprehensive hydroxyl protection: Except for position 6, all other hydroxyl groups (positions 1, 2, 3, and 4) are protected by acetyl groups (-OAc). Acetylation not only significantly enhances the lipid solubility and membrane permeability of the molecule, facilitating cell experimental research, but more importantly, it serves as a protective group in chemical synthesis, allowing researchers to further functionalize and derivatize the 6-position amino group directionally and selectively in subsequent steps without worrying about interference from other hydroxyl groups.

This design that combines "reactive amino introduction" and "inert site protection" gives the molecule a high degree of reaction specificity and application flexibility.

Main applications and advantages

Probes for studying glycobiological mechanisms

Metabolic pathway tracing: As an analog of L-galactose, it can be used to study the biosynthesis, transport and metabolic integration pathways of related sugar nucleotides. Its amino labeling facilitates the introduction of fluorescent groups and affinity tags (such as biotin) through chemical or biological conjugation, thereby enabling tracking and visualization of specific glycosylation processes.

Enzyme research tool: It is an ideal probe or competitive inhibitor for studying the substrate specificity and catalytic mechanism of enzymes such as glycosyltransferases and glycoside hydrolases. Modified amino groups may mimic or interfere with enzyme interactions with natural substrates.

Key intermediates in the synthesis of carbohydrate drugs and glycoconjugates

Active building block: The free amino group at position 6 is an efficient reaction handle, which can undergo condensation reactions with carboxylic acids, active esters, etc., and can easily connect various pharmacophore, linker or carrier molecules. The fully acetylated state ensures the stability and integrity of the sugar ring structure during the coupling reaction.

Synthesis of complex oligosaccharides and sugar mimics: It is an important starting material for constructing complex oligosaccharides, glycopeptides or glycolipids containing amino sugar structural units (such as galactosamine analogs). Its L-configuration also provides material for studying biorecognition processes with chiral specificity.

Molecular recognition and interaction research

Lectins and receptor ligands: The introduction of amino groups changes the charge distribution and hydrogen bonding pattern of galactose, which can be used to study the recognition specificity and affinity of galactose-binding proteins (such as lectins and antibodies) and help elucidate the fine structural basis of sugar-protein interactions.

Drug targeting research: Based on the overexpression of specific carbohydrate receptors on the cell surface, glycosylated ligands derived from this intermediate have potential value in the development of targeted drug delivery systems.

Conclusion

1,2,3,4-Tetra-O-acetyl-6-amino-6-deoxy-L-galactose relies on its exquisite chemical design to surpass the functional limitations of natural sugar molecules. As a versatile chemical tool and synthetic building block, it is playing an increasingly important role in basic research to reveal the mysteries of carbohydrate life, as well as in applied research to develop new diagnostic and therapeutic strategies based on glycoscience. Its value lies in providing scientific researchers with a precise and powerful molecular handle to control and explore the sugar world.

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