Novel Glycoconjugate of 8-Fluoro Norfloxacin Derivatives as Gentamicin-resistant<i>Staphylococcus aureus</i>Inhibitors: Synthesis and Molecular Modelling Studies
作者:Chandra S. Azad、Shome S. Bhunia、Atul Krishna、Praveen K. Shukla、Anil K. Saxena
DOI:10.1111/cbdd.12503
日期:2015.10
resistance Staphylococcusaureus. Among these compounds, the compound 10g showed better antibacterial activity (MIC = 3.12 μg/ml) than gentamicin (Escherichia coli (12.5 μg/ml), Staphylococcusaureus (6.25 μg/ml) and Klebsiella pneumonia (6.25 μg/ml), including gentamicin resistant (>50 μg/ml) strain in vitro). The docking studies suggest DNA gyrase of Staphylococcusaureus as a probable target for the
Structure-based design of UDP-GlcNAc analogs as candidate GnT-V inhibitors
作者:Amol M. Vibhute、Hide-nori Tanaka、Sushil K. Mishra、Reina F. Osuka、Masamichi Nagae、Chizuko Yonekawa、Hiroaki Korekane、Robert J. Doerksen、Hiromune Ando、Yasuhiko Kizuka
DOI:10.1016/j.bbagen.2022.130118
日期:2022.6
pocket structure, we hypothesized that UDP-GlcNAc analogs with increasing hydrophobicity may be GnT-V inhibitors. Methods: We chemically synthesized 10 UDP-GlcNAc analogs in which one or two phosphate groups were replaced with hydrophobic groups. To test these compounds, we set up an HPLC-based enzyme assay system for all N-glycan-branching GlcNAc transferases in which GnT-I–V activity was measured using
[GRAPHICS]Copper-catalyzed multicomponent reactions with sugar alkynes, sulfonyl azides, and amines to furnish glycosylated N-sulfonylamidines are reported. The reaction is established to be general in terms of different combinations of sugar alkyne, sulfonyl azide, and amines.
Probing replacement of pyrophosphate via click chemistry; synthesis of UDP-sugar analogues as potential glycosyl transferase inhibitors
作者:Kar Kheng Yeoh、Terry D. Butters、Brendan L. Wilkinson、Antony J. Fairbanks
DOI:10.1016/j.carres.2009.01.001
日期:2009.3
A series of potential UDP-sugar mimics were readily synthesised by copper(I) catalysed modified Huisgen cycloaddition of the corresponding alpha-propargyl glycosides with 5-azido uridine in aqueous solution. None of the compounds accessed displayed significant inhibitory activity at concentrations of up to 4.5 mM in an assay against bovine milk beta-1,4-galactosyltransferase. (C) 2009 Elsevier Ltd. All rights reserved.
Sulfuric acid immobilized on silica: an excellent catalyst for Fischer type glycosylation
作者:Bimalendu Roy、Balaram Mukhopadhyay
DOI:10.1016/j.tetlet.2007.03.165
日期:2007.5
Fischer glycosylation, a widely used technique for the preparation of simple alkyl or aryl glycosides, has a few drawbacks including the use of strong mineral acids, excess alcohols, high temperature and long reaction times. This manuscript highlights a modification using sulfuric acid immobilized on silica as catalyst for the preparation of glycosides from free sugars such as D-glucose, D-galactose, D-mannose, L-rhamnose, L-fucose, N-acetyl-D-glucosamine and D-maltose with a diverse range of alcohols to afford a series of useful sugar derivatives in good to excellent yields. (C) 2007 Elsevier Ltd. All rights reserved.