Nanomolar Inhibitors of Glycogen Phosphorylase Based on beta-d-Glucosaminyl Heterocycles: A Combined Synthetic, Enzyme Kinetic, and Protein Crystallography Study.Bokor, E., Kyriakis, E., Solovou, T.G.A., Koppany, C., Kantsadi, A.L., Szabo, K.E., Szakacs, A., Stravodimos, G.A., Docsa, T., Skamnaki, V.T., Zographos, S.E., Gergely, P., Leonidas, D.D., Somsak, L.
(2017) J. Med. Chem. 60: 9251-9262
- PubMed: 28925695
- DOI: 10.1021/acs.jmedchem.7b01056
- Primary Citation of Related Structures:
- PubMed Abstract:
Aryl substituted 1-(β-d-glucosaminyl)-1,2,3-triazoles as well as C-β-d-glucosaminyl 1,2,4-triazoles and imidazoles were synthesized and tested as inhibitors against muscle and liver isoforms of glycogen phosphorylase (GP). While the N-β-d-glucosaminy ...
Aryl substituted 1-(β-d-glucosaminyl)-1,2,3-triazoles as well as C-β-d-glucosaminyl 1,2,4-triazoles and imidazoles were synthesized and tested as inhibitors against muscle and liver isoforms of glycogen phosphorylase (GP). While the N-β-d-glucosaminyl 1,2,3-triazoles showed weak or no inhibition, the C-β-d-glucosaminyl derivatives had potent activity, and the best inhibitor was the 2-(β-d-glucosaminyl)-4(5)-(2-naphthyl)-imidazole with a K i value of 143 nM against human liver GPa. An X-ray crystallography study of the rabbit muscle GPb inhibitor complexes revealed structural features of the strong binding and offered an explanation for the differences in inhibitory potency between glucosyl and glucosaminyl derivatives and also for the differences between imidazole and 1,2,4-triazole analogues.
Department of Organic Chemistry, University of Debrecen , POB 400, H-4002 Debrecen, Hungary.,Department of Medical Chemistry, Faculty of Medicine, University of Debrecen , Egyetem tér 1, H-4032 Debrecen, Hungary.,Institute of Biology, Pharmaceutical Chemistry and Biotechnology, National Hellenic Research Foundation , 48 Vassileos Constantinou Avenue, 11635 Athens, Greece.,Department of Biochemistry and Biotechnology, University of Thessaly, Biopolis , 41500 Larissa, Greece.