Journal
EUROPEAN JOURNAL OF MEDICINAL CHEMISTRY
Volume 45, Issue 3, Pages 1263-1265Publisher
ELSEVIER FRANCE-EDITIONS SCIENTIFIQUES MEDICALES ELSEVIER
DOI: 10.1016/j.ejmech.2009.12.012
Keywords
Tritium; Radiolabelling; Radioligand; 5-HT4; Serotonin-4 receptors
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Two potent and selective 5-HT4 ligands, [H-3]-5-[(N-propylpiperidin-4-yl)methoxy]-1,2,3,4-tetrahydrobenzo[h][1,6] naphthyricline (1a) and [H-3]-1-methyl-5-[(N-propylpiperidin-4-yl)methoxy]pyrrolo[1,2-a]thieno[2,3-e]pyrazine (2a) were radiolabelled with tritium. Radioactive labelling was achieved by Simultaneous tritium reduction of a mixture of both propargylic precursors (1c-2c). The two tritiated ligands thus obtained were radiochemically pure and possessed high radioactive specific activities. These tritiated 5-HT4 ligands will allow for binding characterization as an essential tool for their further development. (C) 2009 Elsevier Masson SAS. All rights reserved.
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