Chemoenzymatic synthesis of C8-modified sialic acids and related α2–3-and α2–6-linked sialosides

H Yu, H Cao, VK Tiwari, Y Li, X Chen - Bioorganic & medicinal chemistry …, 2011 - Elsevier
Naturally occurring 8-O-methylated sialic acids, including 8-O-methyl-N-acetylneuraminic
acid and 8-O-methyl-N-glycolylneuraminic acid, along with 8-O-methyl-2-keto-3-deoxy-d …

Chemoenzymatic synthesis of GD3 oligosaccharides and other disialyl glycans containing natural and non-natural sialic acids

H Yu, J Cheng, L Ding, Z Khedri, Y Chen… - Journal of the …, 2009 - ACS Publications
In order to understand the biological importance of naturally occurring sialic acid variations
on disialyl structures in nature, we developed an efficient two-step multienzyme approach for …

Chemoenzymatic synthesis of Neu5Ac9NAc-containing α2–3-and α2–6-linked sialosides and their use for sialidase substrate specificity studies

W Li, A Xiao, Y Li, H Yu, X Chen - Carbohydrate research, 2017 - Elsevier
O-Acetylation of sialic acid (Sia) modulates its recognition by sialic acid-binding proteins and
plays an important role in biological and pathological processes. 9-O-Acetylation is the most …

Chemoenzymatic synthesis of sialosides containing C7-modified sialic acids and their application in sialidase substrate specificity studies

Z Khedri, Y Li, S Muthana, MM Muthana, CW Hsiao… - Carbohydrate …, 2014 - Elsevier
Modifications at the glycerol side chain of sialic acid in sialosides modulate their recognition
by sialic acid-binding proteins and sialidases. However, limited work has been focused on …

Synthesis of sialic acids, their derivatives, and analogs by using a whole‐cell catalyst

X Lv, H Cao, B Lin, W Wang, W Zhang… - … A European Journal, 2017 - Wiley Online Library
Sialic acids (Sias) are important constituents of cell surface glycans. Ready access to Sias in
large quantities would facilitate the development of carbohydrate‐based vaccines and small …

[HTML][HTML] Membrane-enclosed multienzyme (MEME) synthesis of 2, 7-anhydro-sialic acid derivatives

M Monestier, D Latousakis, A Bell, S Tribolo… - Carbohydrate …, 2017 - Elsevier
Abstract Naturally occurring 2, 7-anhydro-alpha-N-acetylneuraminic acid (2, 7-anhydro-
Neu5Ac) is a transglycosylation product of bacterial intramolecular trans-sialidases (IT …

Aldolase-Catalyzed Synthesis of β-d-Galp-(1→9)-d-KDN:  A Novel Acceptor for Sialyltransferases

H Yu, X Chen - Organic Letters, 2006 - ACS Publications
β-d-Gal p-(1→ 9)-d-KDN, a disaccharide component of the cell wall of Streptomyces sp. MB-
8, was synthesized from β-d-Gal p-(1→ 6)-d-Man p and pyruvate using a sialic acid …

Chemo-enzymatic synthesis of C-9 acetylated sialosides

J Rauvolfova, A Venot, GJ Boons - Carbohydrate research, 2008 - Elsevier
A chemo-enzymatic synthesis of [(5-acetamido-9-O-acetyl-3, 5-dideoxy-d-glycero-α-d-
galacto-2-nonulopyranosylonic acid)-(2→ 3)-O-(β-d-galactopyranosyl)-(1→ 3)-O-(2 …

Chemoenzymatic Synthesis of Sialosides Containing 7-N- or 7,9-Di-N-acetyl Sialic Acid as Stable O-Acetyl Analogues for Probing Sialic Acid-Binding Proteins

AS Kooner, S Diaz, H Yu, A Santra… - The Journal of organic …, 2021 - ACS Publications
A novel chemoenzymatic synthon strategy has been developed to construct a
comprehensive library of α2–3-and α2–6-linked sialosides containing 7-N-or 7, 9-di-N-acetyl …

Enabling chemoenzymatic strategies and enzymes for synthesizing sialyl glycans and sialyl glycoconjugates

X Chen - Accounts of Chemical Research, 2023 - ACS Publications
Conspectus Sialic acids are fascinating negatively charged nine-carbon monosaccharides.
Sialic acid-containing glycans and glycoconjugates are structurally diverse, functionally …