Carbohydrate recognition is essential in cellular interactions and biological processes. It is characterized by structural diversity, multivalency and cooperative effects. To evaluate carbohydrate interaction and recognition, the structurally defined attachment of sugar units to a rigid template is highly desired. β-Peptide helices offer conformationally stable templates for the linear presentation of sugar units in defined distances. The synthesis and β-peptide incorporation of sugar-β-amino acids are described providing the saccharide units as amino acid side chain. The respective sugar-β-amino acids are accessible by Michael addition of ammonia to sugar units derivatized as α,β-unsaturated esters. Three sugar units were incorporated in β-peptide oligomers varying the sugar (glucose, galactose, xylose) and sugar protecting groups. The influence of sugar units and the configuration of sugar-β-amino acids on β-peptide secondary structure were investigated by CD spectroscopy.
Download full-text PDF |
Source |
|---|---|
| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4077383 | PMC |
| http://dx.doi.org/10.3762/bjoc.10.93 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
identification through bronchoscope in intensive care unit - a retrospective, databased cohort study.
Front Cell Infect Microbiol
January 2025
Department of Thoracic Medicine, Chang Gung Memorial Hospital, Taoyuan, Taiwan.
Introduction: Invasive pulmonary aspergillosis (IPA) increases the risk of mortality of critically ill patients. Diagnostic criteria specifically targeting patients in intensive care units(ICUs) have been developed to improve diagnostic sensitivity. This study investigated health outcomes among patients in ICUs with Aspergillus isolates identified using bronchoscopy.
View Article and Find Full Text PDFSynthesis and Resolution of 4'-Substituted Nucleosides with Potential Antiviral and Antisense Strategies.
J Org Chem
January 2025
Faculty of Pharmaceutical Sciences, Tohoku Medical and Pharmaceutical University, Komatsushima 4-4-1, Aoba-ku, Sendai 981-8558, Japan.
Nucleoside derivatives having a 4-substituent show promise as potential antiviral agents as well as nucleoside units for constructing nucleic acid medicines. To develop new nucleosides, it is crucial to achieve feasible access to the intended derivatives, encompassing both enantiomers. Toward this end, we started synthesizing an achiral 4-hydroxymethyldihydrofuran as a sugar precursor, which we subjected to the oxidative glycosylation reaction using hypervalent iodine.
View Article and Find Full Text PDFEffects of D-Tagatose on Cariogenic Risk: A Systematic Review of Randomized Clinical Trials.
Nutrients
January 2025
Escuela de Kinesiología, Facultad de Salud, Universidad Santo Tomás, Talca 3460000, Chile.
Unlabelled: Dental caries remains a prevalent chronic disease driven by dysbiosis in the oral biofilm, with playing a central role in its pathogenesis.
Objective: This study aimed to assess the effect of D-tagatose on cariogenic risk by analyzing randomized clinical trials (RCTs).
Methods: A systematic literature review was conducted targeting RCTs published up to 2024 in eight databases and two gray literature sources.
Structure of a Sulfated Capsular Polysaccharide from the Marine Bacterium KMM 1449 and a Genomic Insight into Its Biosynthesis.
Mar Drugs
January 2025
G.B. Elyakov Pacific Institute of Bioorganic Chemistry, Far Eastern Branch, Russian Academy of Sciences, 159/2, Prospect 100 Let Vladivostoku, Vladivostok 690022, Russia.
Some marine and extremophilic microorganisms are capable of synthesizing sulfated polysaccharides with a unique structure. A number of studies indicate significant biological properties of individual sulfated polysaccharides, such as antiproliferative activity, which makes them a promising area for further research. In this study, the capsular polysaccharide (CPS) was obtained from the bacterium KMM 1449, isolated from a marine sediment sample collected along the shore of the Sea of Japan.
View Article and Find Full Text PDFHypoglycemia and hospital mortality in critically ill patients.
Sci Rep
January 2025
Department of Critical Care Medicine, Taichung Veterans General Hospital, 1650 Taiwan Boulevard Sect. 4, Taichung, 40705, Taiwan.
Prior research has indicated that adopting strict glycemic control measures might elevate the risk of hypoglycemia and result in higher mortality rates among critically ill patients. However, there is a lack of studies investigating the incidence of hypoglycemia and its consequential outcomes in real-world clinical settings. This retrospective cohort study was conducted at Taichung Veterans General Hospital, utilizing critical care databases covering the period from 2015 to 2020.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!