Abstract
High levels of heparan sulfate (HS) are a marker for several mucopolysaccharidosis (MPS) disorders which are lysosomal storage diseases caused by genetic defects in HS-degrading enzymes. Quantitation of HS in biological samples is therefore critical for diagnosis and evaluating the efficacy of new therapies. Herein we present the efficient synthesis of a butylated GlcN-GlcA disaccharide and its deuterated derivative for use as an internal standard in a quantitative mass spectrometry-based assay for analysis of HS following butanolysis. The synthesis features the stereoselective 1,2-cis glycosylation of a GlcA acceptor with a 6-O-benzoyl-2-deoxy-2-azido thioglucoside donor.
Published Version
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