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Travins JM, Etzkorn FA. Design and Enantioselective Synthesis of a Peptidomimetic of the Turn in the Helix-Turn-Helix DNA-Binding Protein Motif. J Org Chem. 1997;62(24):8387-8393doi: 10.1021/jo971077h.
Travins, J. M., & Etzkorn, F. A. (1997). Design and Enantioselective Synthesis of a Peptidomimetic of the Turn in the Helix-Turn-Helix DNA-Binding Protein Motif. The Journal of organic chemistry, 62(24), 8387-8393. https://doi.org/10.1021/jo971077h
Travins, Jeremy M., and Etzkorn, Felicia A.. "Design and Enantioselective Synthesis of a Peptidomimetic of the Turn in the Helix-Turn-Helix DNA-Binding Protein Motif." The Journal of organic chemistry vol. 62,24 (1997): 8387-8393. doi: https://doi.org/10.1021/jo971077h
Travins JM, Etzkorn FA. Design and Enantioselective Synthesis of a Peptidomimetic of the Turn in the Helix-Turn-Helix DNA-Binding Protein Motif. J Org Chem. 1997 Nov 28;62(24):8387-8393. doi: 10.1021/jo971077h. PMID: 11671976.
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J Org Chem. 1997 Nov 28;62(24):8387-8393. doi: 10.1021/jo971077h.

Design and Enantioselective Synthesis of a Peptidomimetic of the Turn in the Helix-Turn-Helix DNA-Binding Protein Motif.

The Journal of organic chemistry

Jeremy M. Travins, Felicia A. Etzkorn

Affiliations

  1. University of Virginia, Department of Chemistry, McCormick Road, Charlottesville, Virginia 22901.

PMID: 11671976 DOI: 10.1021/jo971077h

Abstract

A peptidomimetic of the turn in the helix-turn-helix (HTH) motif of DNA-binding proteins was designed and synthesized. Conformational constraint was achieved by an unusual linking of two amino acids with a side chain carbon-carbon bond. A phenyl ring provides the potential for new hydrophobic contacts with the hydrophobic core of the HTH motif. In the mimic, the peptide backbone and the central residue were retained in native form within a 12-membered cyclic tripeptide. The target compound 1b was synthesized by two sequential Horner-Wittig couplings followed by enantioselective hydrogenation with Rh(MeDuPHOS) in eight steps and 35% overall yield. The stereochemical outcome of the key hydrogenation was determined by aromatic ring oxidation with RuO(2)/NaIO(4) to give 2 equiv of Boc-Asp-OMe.

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