Synthesis of 4-amino-4,5-dideoxy-L-lyxofuranose derivatives and their evaluation as fucosidase inhibitors |
| |
Authors: | Chevrier Carine Le Nouën Didier Defoin Albert Tarnus Céline |
| |
Institution: | Laboratoire de Chimie Organique et Bioorganique, FRE 3253, école Nationale Supérieure de Chimie de Mulhouse, Université de Haute-Alsace, 3, rue Alfred Werner, F-68093 Mulhouse Cédex, France. |
| |
Abstract: | The nitrone 4 (4,5-dideoxy-4-hydroxylamino-3,4-O-isopropylidene-L-lyxofuranose) was synthesised from D-ribose and used as key intermediate for the preparation of fucosidase inhibitors. We describe two transformations of 4. Hydrolysis with aqueous sulfur dioxide gave the known potent nanomolar inhibitor 4-amino-4,5-dideoxy-L-lyxofuranose (3). 1,3-Dipolar cycloaddition with enol ethers led to the related 1,2,5,6-tetradeoxy-2,5-imino-L-altroheptonic ester 2a, acid 2b and the corresponding heptitol 2c. The new iminosugars have been evaluated for their inhibitory activity against α-L-fucosidase from bovine kidney. The alcohol 2c turned out to be a potent inhibitor in the same range as the amino-sugar 3 (K(i)=8 vs 10nM). |
| |
Keywords: | |
本文献已被 PubMed 等数据库收录! |
|