Journal
MOLECULES
Volume 18, Issue 5, Pages 4972-4985Publisher
MDPI
DOI: 10.3390/molecules18054972
Keywords
natural product; cyclic peptide; lead; coordination polymer; crystal structures; macrocyclic chemistry
Funding
- National Science Council of Taiwan
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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.
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