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Molecules 2012, 17(5), 5346-5362; doi:10.3390/molecules17055346

Parallel Synthesis of Peptide-Like Macrocycles Containing Imidazole-4,5-dicarboxylic Acid

1 Department of Pharmacology and Toxicology, The University of Arizona, Tucson, AZ 85724, USA 2 Department of Chemistry, Eastern Illinois University, Charlestown, IL 61920, USA 3 Department of Chemistry, Keene State College, Keene, NH 03435, USA
* Author to whom correspondence should be addressed.
Received: 5 April 2012 / Revised: 26 April 2012 / Accepted: 3 May 2012 / Published: 8 May 2012
(This article belongs to the Special Issue Parallel Synthesis)
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We prepared a series of peptide-like 14-membered macrocycles containing an imidazole-4,5-dicarboxylic acid scaffold by using known coupling reagents and protecting group strategies. Yields of the purified macrocycles were poor on average, yet seemingly independent of amino acid substitution or stereochemistry. The macrocycles retain some level of conformational variability as observed by both molecular modeling and X-ray crystallography. These macrocycles represent a new class of structures for further development and for future application in high-throughput screening against a variety of biological targets.
Keywords: macrocycle; scaffold; library synthesis; imidazole-4,5-dicarboxylic acid macrocycle; scaffold; library synthesis; imidazole-4,5-dicarboxylic acid
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Xu, Z.; Wheeler, K.A.; Baures, P.W. Parallel Synthesis of Peptide-Like Macrocycles Containing Imidazole-4,5-dicarboxylic Acid. Molecules 2012, 17, 5346-5362.

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