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DOI: 10.1055/s-2003-38075
Regioselective Synthesis of Galactosylated Tri- and Tetrasaccharides by Use of β-Galactosidase from Bacillus circulans
Publication History
Publication Date:
21 March 2003 (online)
Abstract
β-Galactosidase from Bacillus circulans (EC 3.2.1.23) catalyses the transfer of galactose units to various glucose and galactose derivatives, forming β1→4 linkages. The synthesis of several biologically relevant tri- and tetrasaccharides {β-d-Galp-(1→4)-β-d-Galp-(1→4)-α,β-d-Glcp (2), β-d-Galp-(1→4)-α-d-Glcp-(1→4)-d-Glcp-ol/Manp-ol (4), β-d-Galp-(1→4)-α-d-Glcp-(1→6)-β-d-Fruf (6), β-d-Galp-(1→4)-α-d-Glcp-(1↔2)-β-d-Fruf (8), β-d-Galp-(1→4)-α-d-Glcp-(1↔2)-β-d-Fruf-(1↔2)-β-d-Fruf (10), β-d-Galp-(1→4)-α-d-Glcp-(1→6)-[α-d-Glcp-(1↔2)]-β-d-Fruf (12a), β-d-Galp-(1→4)-α-d-Glcp-(1↔2)-[α-d-Glcp-(1→6)]-β-d-Fruf (12b), α-d-Galp-(1→6)-[β-d-Galp-(1→4)]-α-d-Glcp-(1↔2)-β-d-Fruf (14a), β-d-Galp-(1→4)-α-d-Galp-(1→6)-α-d-Glcp-(1↔2)-β-d-Fruf (14b)} has been achieved in 11-59% yields by application of this enzyme.
Key words
transglycosylations - β-galactosidase - Bacillus circulans - enzymes - tri- and tetrasaccharides
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