Fluorinated and iodinated dopamine agents: D2 imaging agents for PET and SPECT
摘要:
A novel series of dual-labeling D2 dopamine agents (labeled with either F-18 or I-123 for PET or SPECT imaging, respectively) was investigated. Two desired fluorinated and iodinated dopamine agents, FIDA1, (S)-(-)-2-(2-fluoroethoxy)-5-iodo-3-methoxy-N-[(1-ethyl-2-pyrrolidinyl)methyl]benzamide, and FIDA2, (R)-(+)-2,3-dimethoxy-5-iodo-N-[(1-(4'-fluorobenzyl)-2-pyrrolidinyl)methyl]benzamide, were synthesized. Both compounds displayed high affinity to the D2 receptor of rat striatal membrane preparations (K(d) = 0.13 and 0.02 nM for FIDA1 and FIDA2, respectively). The biodistribution study in rats exhibited high localization in the striata of the brain with the striatum/cerebellum ratio reaching 29.3 and 13.1 at 1 h post iv injection for FIDA1 and FIDA2, respectively. Imaging studies with [F-18]- and [I-123]FIDA2 in monkeys, with PET and SPECT, respectively, showed comparable high selective striatal uptake. These results suggest that they are potentially useful D2 dopamine receptor imaging agents for PET and SPECT.
a variety of phosmidosine analogues 1a−d replaced by longer alkyl groups in place of the methyl group on the phosphoramidate linkage were synthesized by reaction of alkyl N-(N-tritylprolyl)phosphorodiamidite derivatives 7a−d with an 8-oxoadenosine derivative 4 protected with acid-labile protecting groups. Consequently, the O-ethyl ester derivative 1b was found to be sufficiently stable in aqueous
Pyridinopyridinone derivatives, preparation thereof and therapeutic use thereof
申请人:Bellevergue Patrice
公开号:US08436011B2
公开(公告)日:2013-05-07
The present invention relates to pyridopyridone derivatives of formula (I):
in which the variables are as defined herein, to their preparation and to their therapeutic use as inhibitors of the kinase activity of PDGF (platelet-derived growth factor) ligand receptors and possibly of FLT3 (fms-like tyrosine kinase receptor) ligand receptors.
DERIVES DE PYRIDINO-PYRIDINONES, LEUR PREPARATION ET LEUR APPLICATION EN THERAPEUTIQUE
申请人:Sanofi-Aventis
公开号:EP2315767A2
公开(公告)日:2011-05-04
US8436011B2
申请人:——
公开号:US8436011B2
公开(公告)日:2013-05-07
[EN] PYRIDINO-PYRIDINONE DERIVATIVES, PREPARATION THEREOF, AND THERAPEUTIC USE THEREOF<br/>[FR] DERIVES DE PYRIDINO-PYRIDINONES, LEUR PREPARATION ET LEUR APPLICATION EN THERAPEUTIQUE
申请人:SANOFI AVENTIS
公开号:WO2010004197A2
公开(公告)日:2010-01-14
L'invention concerne les dérivés de pyridino-pyridinones, de formule générale (I): dans laquelle R1, R2, R3, R4, R5, R6, R7, V, W, Y, Z, m sont tels que définis dans la description. Procédé de préparation et application en thérapeutique.