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Issue 3, 2016
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Targeting the protein backbone with aryl halides: systematic comparison of halogen bonding and π⋯π interactions using N-methylacetamide

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Abstract

The ubiquitous amide moiety of the protein backbone is an essential interaction partner in any binding site. Using quantum mechanical calculations, we evaluate how to target this moiety through halogen bonding. In contrast to previously employed atom-centric spherical scans, we make use of planar scans to additionally account for the delocalised π-electrons of the amide. The scans showed that perpendicular interaction geometries are moderately strong while favouring the carbonyl oxygen atom at lower distances. Gradually moving to a parallel arrangement results in a transition from σ-hole interactions toward π⋯π and dipolar interactions and higher interaction energies.

Graphical abstract: Targeting the protein backbone with aryl halides: systematic comparison of halogen bonding and π⋯π interactions using N-methylacetamide

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Supplementary files

Article information


Submitted
30 Oct 2015
Accepted
24 Dec 2015
First published
04 Jan 2016

This article is Open Access

Med. Chem. Commun., 2016,7, 500-505
Article type
Research Article

Targeting the protein backbone with aryl halides: systematic comparison of halogen bonding and π⋯π interactions using N-methylacetamide

M. O. Zimmermann and F. M. Boeckler, Med. Chem. Commun., 2016, 7, 500
DOI: 10.1039/C5MD00499C

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