Synthesis of N-Acyl-Glucosaminyl Derivatives for Inhibition of Human OGA

<none>

Programme Social programme Plenary speakers Keynote speakers 1st EuroCarb Young Researcher (ECYR) Workshop CarboMet Workshop Mini symposium: Glycobiology at the LUMC and beyond Favourites/Agenda

Social programme

Plenary speakers

Keynote speakers

1st EuroCarb Young Researcher (ECYR) Workshop

CarboMet Workshop

Mini symposium: Glycobiology at the LUMC and beyond

Favourites/Agenda

Photos

Venue & Travel Venue Accommodation City of Leiden Travel directions

Venue

Accommodation

City of Leiden

Travel directions

Committees

Home

Synthesis of N-Acyl-Glucosaminyl Derivatives for Inhibition of Human OGA

Mariann Kiss 1 , Teréz Barna 2 , László Somsák 1

1 Department of Organic Chemistry, University of Debrecen, Debrecen, Hungary, 2 Department of Genetics and Applied Microbiology, University of Debrecen, Debrecen, Hungary

O-GlcNAcylation is a dynamic post-translational modification by adding and removing a single β-N-acetylglucosamine (GlcNAc) moiety to and from serine/threonine residues of nucleocytosolic and mitochondrial proteins. The dynamic cycling of O-GlcNAc modification on numerous, functionally diverse set of proteins is catalyzed by two enzymes: O-linked β-N-acetylglucosamine transferase (OGT) and β-N-acetylglucosaminidase (OGA) in response to cellular signals or cellular stages, similarly to phosphorylation. In many cases, phosphorylation and O-GlcNAcylation target the same serine/threonine residues in a reciprocal manner.[1,2] Human OGA is a promising therapeutic target in diseases where aberrant low level of O-GlcNAc is experienced.

PUGNAC (1) is one of the first inhibitors of OGA, NAG-thiazoline (2) is a transition-state mimicry inhibitor. Longer chains in the C-2 position can improve the inhibition and also the selectivity. Thus, Thiamet-G (3) has a dramatic 37 000-fold selectivity over the lysosomal β-hexosaminidase.[3] Also, the triazole compounds 4 have shown acceptable inhibition in case of aromatic substituents. Here we present the synthesis of some PUGNAC analog compounds (5), as well as C-(glucosaminyl)-heterocycles (6) among which tight-binding nanomolar inhibitors of human OGA were found.

Hart GW. Nutrient regulation of signaling and transcription. Journal of Biological Chemistry. 2019;294(7):2211-31.

Yuzwa SA, Vocadlo DJ. O-GlcNAc and neurodegeneration: biochemical mechanisms and potential roles in Alzheimer's disease and beyond. Chem Soc Rev. 2014;43(19):6839-58.

Macauley MS, Vocadlo DJ. Increasing O-GlcNAc levels: An overview of small-molecule inhibitors of O-GlcNAcase. Biochim Biophys Acta, Gen Subj. 2010;1800(2):107-21.

Contact eurocarb@eurocarb2019.com for general questions about EUROCARB2019, or codee@eurocarb2019.com for scientific questions.

Leiden University / Leiden Institute of Chemistry lic.leidenuniv.nl

European Carbohydrate Organisation

Congress by Design www.congressbydesign.com