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Avoidance of the Ames test liability for Aryl-amines via computation.

Mccarren, Patrick and Bebernitz, Gregory and Gedeck, Peter and Glowienke, Susanne and Grondine, Melissa and Kirman, Louise and Klickstein, Jacob and Schuster, Herbert and Whitehead, Lewis (2011) Avoidance of the Ames test liability for Aryl-amines via computation. Bioorganic and Medicinal Chemistry, 19 (10). pp. 3173-3182. ISSN 0968-0896

Abstract

Aryl-amines are commonly used synthons in modern drug discovery, however a minority of these chemical templates have the potential to cause toxicity through mutagenicity. The toxicity mostly arises through a series of metabolic steps leading to a reactive electrophilic nitrenium cation intermediate that reacts with DNA nucleotides causing mutation. Highly detailed in-silico calculations of the energetics of chemical reactions involved in the metabolic formation of nitrenium cations have been performed. This allowed a critical assessment of the accuracy and reliability of using a theoretical formation energy of the DNA-reactive nitrenium intermediate to correlate with the Ames test response. This study contains the largest data set reported to date, and presents the in-silico calculations versus the in-vitro Ames response data in the form of beanplots commonly used in statistical analysis. A comparison of this quantum mechanical approach to QSAR and knowledge-based methods is also reported, as well as the calculated formation energies of nitrenium ions for thousands of commercially available aryl-amines generated as a watch-list for medicinal chemists in their synthetic optimization strategies.

Item Type: Article
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Additional Information: author can archive post-print (ie final draft post-refereeing); Publisher's version/PDF cannot be used
Keywords: Aryl-amines, Toxicity prediction, Nitrenium, Ames, Density Functional Theory
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Date Deposited: 13 Oct 2015 13:15
Last Modified: 13 Oct 2015 13:15
URI: https://oak.novartis.com/id/eprint/4764

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