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2-C-Branced mannosides as a novel family of FimH antagonists - Synthesis and biological evaluation

Schönemann, Wojciech and Lindegger, Marcel and Rabbani, Said and Zihlmann, Pascal. (2017) 2-C-Branced mannosides as a novel family of FimH antagonists - Synthesis and biological evaluation. Perspectives in Science, 11. pp. 53-61.

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Abstract

Urinary tract infections (UTIs), which are among the most prevalent bacterial infections worldwide, are mainly attributed to uropathogenic Escherichia coli (UPEC). Because of frequent antibiotic treatment, antimicrobial resistance constitutes an increasing therapeutic problem. Antagonists of the mannose-specific bacterial lectin FimH, a key protein mediating the adhesion of UPEC to human bladder cells, would offer an alternative anti-adhesive treatment strategy. In general, FimH antagonists consist of a mannose moiety and a wide range of lipophilic aglycones. Modifications of the mannose core led to a distinct drop in affinity. A visual inspection of the crystal structure of FimH revealed a previously unexplored cavity surrounded by Ile13, Phe142 and Asp140, which could be reached by functional groups in the equatorial 2-position of the mannose. Here, we describe the synthesis of 2- C -branched mannosides and evaluation of their pharmacodynamic properties. ITC experiments with the selected antagonists revealed a drastic enthalpy loss for all 2- C -branched antagonists, which, however, is partially compensated by an entropy gain. This supports the hypothesis that the target cavity is too small to accommodate 2- C -substituents.
Faculties and Departments:05 Faculty of Science > Departement Pharmazeutische Wissenschaften > Pharmazie > Molekulare Pharmazie (Ernst)
UniBasel Contributors:Ernst, Beat and Schönemann, Wojciech and Rabbani, Said and Zihlmann, Pascal
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:Elsevier
e-ISSN:2213-0209
Note:Publication type according to Uni Basel Research Database: Journal article
Language:English
Identification Number:
Last Modified:02 Jan 2018 08:37
Deposited On:02 Nov 2017 08:21

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