Open AccessChemo-Enzymatic Synthesis of Antagonists of the Myelin-associated Glycoprotein (MAG)
Author(s) -
GanPan Gao,
Oliver Schwardt,
Tamara Visekruna,
Said Rabbani,
Beat Ernst
Publication year - 2004
Publication title -
chimia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.387
H-Index - 55
eISSN - 2673-2424
pISSN - 0009-4293
DOI - 10.2533/000942904777678019
Subject(s) - sialyltransferase , enzyme , chemistry , glycoprotein , biochemistry , myelin , antagonist , stereochemistry , biology , receptor , endocrinology , central nervous system
Ganglioside GQ1b ? is the most potent antagonist of the Myelin-associated glycoprotein (MAG) identified so far. For the efficient synthesis of the partial structure of GQ1b ? and derivatives thereof, a chemo-enzymatic strategy using the ?(2?3)-sialyltransferase ratST3Gal III (EC 2.4.99.6) was applied. Besides the natural substrates Gal? (1?3)GlcNAc (19) and Gal? (1?4)GlcNAc (20), the disaccharides Gal? (1?3)GalNTCA?-OSE (9), Gal? (1?3)GalNAc?-OSE (11), and Gal? (1?3)Gal?-OSE (14) were also tolerated by the enzyme and were transformed to the target structures in preparative scale.