5796-31-6Relevant articles and documents
Copper-mediated nucleophilic radiofluorination of [18F]β-CFT for positron emission tomography imaging of dopamine transporter
Yu, Hung-Man,Li, Ching-Yun,Liu, Shiu-Wen,Yang, Chun-Hung,Chang, Yu
, p. 228 - 236 (2021/02/21)
[18F]β-CFT is a positron emission tomography (PET) ligand for imaging of dopamine transporter. It was proved to be a sensitive PET marker to detect presynaptic dopaminergic hypofunction in Parkinson's disease. In recent years, copper-mediated 18F-fluorination of aryl boronic esters has been successful in some molecules containing aromatic groups. In this study, we describe the novel synthetic strategy of [18F]β-CFT by copper-mediated nucleophilic radiofluorination with pinacol-derived aryl boronic esters upon reaction with [18F]KF/K222 and Cu (OTf)2(py)4. The radiolabeling protocol was optimized with [18F]fluoride elution method and amount of copper catalyst used. [18F]β-CFT is obtained from boronic ester precursors in 2.2% to 10.6% non-isolated radiochemical yield (RCY). Purified [18F]β-CFT with >99% radiochemical purity (RCP) and high molar activity was obtained in validation runs. The radiolabeling procedure is straightforward and can easily be adapted for clinical use.
Fluorescent cocaine probes: A tool for the selection and engineering of therapeutic antibodies
Meijler, Michael M.,Kaufmann, Gunnar F.,Qi, Longwu,Mee, Jenny M.,Coyle, Avery R.,Moss, Jason A.,Wirsching, Peter,Matsushita, Masayuki,Janda, Kim D.
, p. 2477 - 2484 (2007/10/03)
Cocaine is a highly addictive drug, and despite intensive efforts, effective therapies for cocaine craving and addiction remain elusive. In recent years, we and others have reported advances in anti-cocaine immunopharmacotherapy based on specific antibodi
Synthesis and monoamine transporter affinity of 3′-analogs of 2-β-carbomethoxy-3-β-(4′-iodophenyl)tropane (β-CIT)
Bois, Frederic,Baldwin, Ronald M.,Kula, Nora S.,Baldessarini, Ross J.,Innis, Robert B.,Tamagnan, Gilles
, p. 2117 - 2120 (2007/10/03)
The 3′-iodo positional isomer of 2-β-carbomethoxy-3-β- (4′-iodophenyl)tropane (β-CIT) and other 3′-substituted analogs were synthesized and evaluated for binding to monoamine transporters in rat forebrain and membranes of cell lines selectively expressing human transporter genes. All 3′-substituted compounds displayed affinity for both serotonin (SERT) and dopamine (DAT), but much less for norepinephrine transporters (NET), with selectivity for rat (r) or human (h) SERT over NET, but only 3′-iodo-substituted phenyltropanes showed selectivity for SERT versus DAT. The 3′-iodo, N-methyl analog of β-CIT (7) displayed 29-fold selectivity and high affinity for hSERT (Ki=9.6nM) over hDAT (K i=279nM), and its nor-congener (8) showed even higher hSERT potency (Ki=1.2nM) and selectivity over DAT (415-fold).