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Molecules 2013, 18(5), 4972-4985; doi:10.3390/molecules18054972
Article

A Lead (II) 3D Coordination Polymer Based on a Marine Cyclic Peptide Motif

1, 1, 1,* , 2 and 2
1 Department of Chemistry, National Dong-Hwa University, Hualien 974, Taiwan 2 Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
* Author to whom correspondence should be addressed.
Received: 26 March 2013 / Revised: 16 April 2013 / Accepted: 24 April 2013 / Published: 26 April 2013
(This article belongs to the Special Issue Macrocyclic Chemistry)
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Abstract

The crystal structure of a naturally occurring cyclic tetrapeptide cyclo(Gly-L-Ser-L-Pro-L-Glu) [cyclo(GSPE)] was obtained. The conformation of synthesized cyclo(GSPE) fixes the coordination to lead ion in a 1:1 ratio. This cyclo(GSPE)-Pb complex was constructed as an asymmetric 3D network in the crystalline state. The polymerization of a heavy metal ion with a rigid asymmetric cyclic tetrapeptide represents the first example of a new class of macrocyclic complexes.
Keywords: natural product; cyclic peptide; lead; coordination polymer; crystal structures; macrocyclic chemistry natural product; cyclic peptide; lead; coordination polymer; crystal structures; macrocyclic chemistry
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Chakraborty, S.; Tyagi, P.; Tai, D.-F.; Lee, G.-H.; Peng, S.-M. A Lead (II) 3D Coordination Polymer Based on a Marine Cyclic Peptide Motif. Molecules 2013, 18, 4972-4985.

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