TY - GEN A1 - Jung, C. M. A1 - Heintz, A. A1 - Kraus, Werner A1 - Wunderlich, G. A1 - Leibnitz, Peter A1 - Pietzsch, H.-J. A1 - Kropp, J. A1 - Deussen, A. A1 - Spies, H. ED - Marino, N. T1 - Technetium- and Rhenium-Labelled Fatty Acids as Model Compounds for Myocardial Metabolism Imaging T2 - Proceedings of the Sixth International Symposium on Technetium in Chemistry and Nuclear Medicine N2 - In an attempt to develop new technetium-based radiopharmaceuticals for the non-invasive diagnosis of oxidative myocardial metabolism, rhenium model compounds according to the ‚3+1' mixed ligand approach as well as the organometallic tricarbonyl-design were synthesized. The geometrical impact of different chelates on the integrity of the fatty acid head structure was determined by single crystal X-ray analyses. To evaluate the diagnostic potential of the analogous Technetium-99m compounds, fatty acid complexes of the ‚3+1' mixed ligand type were prepared on n.c.a.-level and studied in the isolated constant-flow-perfused guinea pig heart model; compared to established [123I]Iodine-labelled fatty acid radiotracers, the tested Technetium-99m derivatives showed a specific, however significantly lower myocardial extraction rate. T2 - 6th International Symposium on Technetium in Chemistry and Nuclear Medicine CY - Bressanone, Italy DA - 2002-09-04 KW - Fatty acids KW - Metabolism KW - Myocardial Imaging KW - Rhenium KW - Technetium-99m PY - 2002 UR - http://www.fzd.de/db/!Publications?pSelYear=2002&pLang=en&pNid=0&pSelWithSubmitted=0&pSelSort=TITEL&pSelPublForm=4&pSelPage=2 SN - 88-86281-73-0 N1 - Serientitel: Technetium, rhenium and other metals in chemistry and nuclear medicine – Series title: Technetium, rhenium and other metals in chemistry and nuclear medicine VL - 6 IS - 6 SP - 443 EP - 445 PB - SGEditoriali CY - Padova AN - OPUS4-1999 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Pietzsch, H.-J. A1 - Seifert, S. A1 - Drews, A. A1 - Syhre, R. A1 - Spies, H. A1 - Leibnitz, Peter A1 - Tisato, F. A1 - Refosco, F. T1 - Novel technetium(III) mixed-ligand chelates for the design of lipophilic complexes stable in vivo JF - Journal of labelled compounds & radiopharmaceuticals PY - 2001 UR - http://www3.interscience.wiley.com/journal/3209/toc SN - 0362-4803 SN - 1099-1344 SN - 0022-2135 VL - 44 IS - 1 SP - 39 PB - Wiley CY - London AN - OPUS4-1557 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER - TY - JOUR A1 - Jung, C. M. A1 - Kraus, Werner A1 - Leibnitz, Peter A1 - Pietzsch, H.-J. A1 - Kropp, J. A1 - Spies, H. T1 - Synthesis and First Crystal Structure of Rhenium Complexes derived from omega-Functionalized Fatty Acids as Model Compounds of Technetium Tracers for Myocardial Metabolism Imaging JF - European journal of inorganic chemistry N2 - In an attempt to develop new technetium-based radiopharmaceuticals for the noninvasive diagnosis of myocardial metabolism, we have synthesized three examples of novel metal-containing fatty acid derivatives according to the 3+1 mixed-ligand and the Schiff base/tricarbonyl design. The chelates contain the metal core in the oxidation states +5 and +1, respectively, and are attached to the end-position of a fatty acid chain. The complex formation was accomplished by ligand-exchange reactions with three different rhenium precursors, whereas the inactive rhenium metal was utilized as a surrogate of the technetium radionuclide. The molecular structures of the fatty acid complexes 7, 10 and 14 were determined by single-crystal X-ray diffraction analyses and impressively show a general problem in technetium tracer research, namely the significant structural alterations of bioactive molecules by coordination even to small metal chelates. KW - Rhenium KW - Technetium KW - Fatty acids KW - Drug research KW - Radiopharmaceuticals PY - 2002 DO - https://doi.org/10.1002/1099-0682(200205)2002:5<1219::AID-EJIC1219>3.0.CO;2-N SN - 1434-1948 SN - 1099-0682 VL - 2002 IS - 5 SP - 1219 EP - 1225 PB - Wiley-VCH Verl. CY - Weinheim AN - OPUS4-1552 LA - eng AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany ER -