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https://hdl.handle.net/2440/53258
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Type: | Journal article |
Title: | Sequential and Selective Buchwald-Hartwig Amination Reactions for the Controlled Functionalization of 6-Bromo-2-chloroquinoline: Synthesis of Ligands for the Tec Src Homology 3 Domain |
Author: | Smith, J. Jones, R. Booker, G. Pyke, S. |
Citation: | Journal of Organic Chemistry, 2008; 73(22):8880-8892 |
Publisher: | Amer Chemical Soc |
Issue Date: | 2008 |
ISSN: | 0022-3263 1520-6904 |
Statement of Responsibility: | Jessica A. Smith, Rhiannon K. Jones, Grant W. Booker and Simon M. Pyke |
Abstract: | Src homology 3 (SH3) domains are highly conserved protein-protein interaction domains that mediate important biological processes and are considered valuable targets for the development of therapeutic agents. In this paper, we report the preparation of a range of new 6-heterocyclic substituted 2-aminoquinolines using Buchwald-Hartwig chemistry. 6-Heterocyclic substitution of the 2-aminoquinoline has provided ligands with increased binding affinity for the SH3 domain relative to the lead compound, 2-aminoquinoline, that are the highest affinity ligands prepared to date. The key step in the synthesis of these compounds required a selective Buchwald-Hartwig amination of an aryl bromide in the presence of an activated heteroaryl chloride. The optimization of reaction conditions to achieve the selective amination is discussed and has allowed for cross-coupling with a range of cyclic amines. Introduction of the amino functionality of the 6-heterocyclic 2-aminoquinolines involved additional Buchwald-Hartwig chemistry utilizing lithium bis(trimethylsilyl)amide as an ammonia equivalent. |
Keywords: | Animals Mice Trimethylsilyl Compounds Quinolines Ligands Binding Sites src Homology Domains Protein Binding Structure-Activity Relationship Substrate Specificity Amination Protein-Tyrosine Kinases |
DOI: | 10.1021/jo801808r |
Published version: | http://dx.doi.org/10.1021/jo801808r |
Appears in Collections: | Aurora harvest 5 Chemistry publications |
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