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γ-Hydroxyethyl piperidine iminosugar and N-alkylated derivatives: a study of their activity as glycosidase inhibitors and as immunosuppressive agents.

Abstract：

:An efficient and practical strategy for the synthesis of (3R,4s,5S)-4-(2-hydroxyethyl) piperidine-3,4,5-triol and its N-alkyl derivatives 8a-f, starting from the D-glucose, is reported. The chiral pool methodology involves preparation of the C-3-allyl-α-D-ribofuranodialdose 10, which was converted to the C-5-amino derivative 11 by reductive amination. The presence of C-3-allyl group gives an easy access to the requisite hydroxyethyl substituted compound 13. Intramolecular reductive aminocyclization of C-5 amino group with C-1 aldehyde provided the γ-hydroxyethyl substituted piperidine iminosugar 8a that was N-alkylated to get N-alkyl derivatives 8b-f. Iminosugars 8a-f were screened against glycosidase enzymes. Amongst synthetic N-alkylated iminosugars, 8b and 8c were found to be α-galactosidase inhibitors while 8d and 8e were selective and moderate α-mannosidase inhibitors. In addition, immunomodulatory activity of compounds 8a-f was examined. These results were substantiated by molecular docking studies using AUTODOCK 4.2 programme.

journal_name

Bioorg Med Chem

journal_title

Bioorganic & medicinal chemistry

authors

Markad PR,Sonawane DP,Ghosh S,Chopade BA,Kumbhar N,Louat T,Herman J,Waer M,Herdewijn P,Dhavale DD

doi

10.1016/j.bmc.2014.09.034

subject

Has Abstract

pub_date

2014-11-01 00:00:00

pages

5776-82

issue

21

eissn

0968-0896

issn

1464-3391

pii

S0968-0896(14)00680-4

journal_volume

22

pub_type

杂志文章

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