Calix[4]arene rhenium(V) complexes as potential radiopharmaceuticals

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Bommel van, Kjeld J.C. and Verboom, Willem and Hulst, Ron and Kooijman, Huub and Spek, Anthony L. and Reinhoudt, David N. (2000) Calix[4]arene rhenium(V) complexes as potential radiopharmaceuticals. Inorganic Chemistry, 39 (18). pp. 4099-4106. ISSN 0020-1669

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Abstract:The calix[4]arene platform was used for the syntheses of novel rhenium(V) complexes, that may have potential applications as radiopharmaceuticals. The reaction of ReO(PPh3)2Cl3 with tetradentate N2O2-calix[4]arene ligand 8 in ethanol gave the novel mixed-ligand rhenium complex 9 with the structure ReO(N2O2-calix)OEt. The configuration was elucidated by using a number of 1H NMR techniques. In 9, the ethoxy ligand could be easily and quantitatively exchanged for another monodentate ligand to give complex 12. Tetradentate N2S2-calix[4]arene ligand 15 formed the rhenium complex 16 either via reaction with ReO(PPh3)2Cl3 in an organic solvent or by reaction with rhenium gluconate in an aqueous solution. Complex 16 showed good stability in phosphate-buffered saline solution (37 C, 5 d). The crystal structures of a mono- and a bimetallic complex were determined.
Item Type:Article
Copyright:© 2000 American Chemical Society
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Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/11749
Official URL:http://dx.doi.org/10.1021/ic000172x
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