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Chem Commun (Camb). 2013 Oct 4;49(76):8504-6. doi: 10.1039/c3cc44784g.

Synthesis of cyclic peptide hemicryptophanes: enantioselective recognition of a chiral zwitterionic guest.

Author information

1
School of Chemistry and Bio21 Molecular Science and Biotechnology Institute, University of Melbourne, Parkville, Victoria 3010, Australia. chutton@unimelb.edu.au.

Abstract

The synthesis of the first members of a new class of cyclic peptide-containing hemicryptophanes is described. Synthesis was achieved through attachment of veratryl groups to the L-tyrosine side chains of a cyclic hexapeptide, c(YG)3, followed by intramolecular cyclodehydration to generate the CTV unit. The diastereomeric P- and M-hemicryptophanes were generated in a 2 : 1 ratio and were separated by chromatography. The enantioselective binding properties of the hemicryptophanes were investigated by complexation with carnitine. Both isomers were found to have significant selectivity for binding (R)-carnitine.

PMID:
23942591
DOI:
10.1039/c3cc44784g
[Indexed for MEDLINE]

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