Premium
Synthesis and Characterization of Sulfated Gal‐ β ‐1,3/4‐GlcNAc Disaccharides through Consecutive Protection/Glycosylation Steps
Author(s) -
Tu Zhijay,
Hsieh HsiaoWu,
Tsai ChihMing,
Hsu ChiaWei,
Wang ShyGuey,
Wu KuanJung,
Lin KuoI,
Lin ChunHung
Publication year - 2013
Publication title -
chemistry – an asian journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.18
H-Index - 106
eISSN - 1861-471X
pISSN - 1861-4728
DOI - 10.1002/asia.201201204
Subject(s) - sulfation , glycosylation , disaccharide , yield (engineering) , chemistry , sulfate , galectin , galectin 3 , galectin 1 , stereochemistry , combinatorial chemistry , biochemistry , organic chemistry , biology , materials science , immunology , metallurgy
We have developed an expeditious procedure to yield large amounts of orthogonally protected Gal‐ β 1,3/4‐GlcNAc, which allowed for the systematic introduction of a sulfate group onto the C3/C6 positions of Gal and/or the C6 position of GlcNAc. In particular, the disaccharide precursors were prepared in five or six steps and high overall yield from para ‐tolyl‐6‐ O ‐ tert ‐butyldiphenylsilyl‐1‐thio‐ β ‐ D ‐galactopyranoside. After deprotection and sulfation steps, the final products were characterized by using several NMR methods to unambiguously confirm the location of each introduced sulfate group and they were examined for their binding specificity of human galectin‐1 and galectin‐8.