Journal
CARBOHYDRATE RESEARCH
Volume 346, Issue 12, Pages 1592-1598Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.carres.2011.05.010
Keywords
Iminoalditol; N-Alkylation; Galactosidase inhibitor; Molecular chaperone; GM1-gangliosidosis
Funding
- Austrian Fonds zur Forderung der Wissenschaftlichen Forschung (FWF), Vienna [P18998-N17]
- Canadian Institutes of Health Research
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Two simple and reliably accessible intermediates, N-carboxypentyl- and N-aminohexyl-1-deoxy-D-galactonojirimycin were employed for the synthesis of a set of terminally N-dansyl substituted derivatives. Reaction of the terminal carboxylic acid of N-carboxypentyl-1-deoxy-D-galactonojirimycin with N-dansyl-1,6-diaminohexane provided the chain-extended fluorescent derivative. Employing bis(6-dansylaminohexyl)amine, the corresponding branched di-N-dansyl compound was obtained. Partially protected N-aminohexyl-1-deoxy-D-galactonojirimycin served as intermediate for two additional chain-extended fluorescent 1-deoxy-D-galactonojirimycin (1-DGJ) derivatives featuring terminal dansyl groups in the N-alkyl substituent. These new compounds are strong inhibitors of D-galactosidases and may serve as leads en route to pharmacological chaperones for GM1-gangliosidosis. (C) 2011 Published by Elsevier Ltd.
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