کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10585406 | 981366 | 2012 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Synthesis, radiofluorination and pharmacological evaluation of a fluoromethyl spirocyclic PET tracer for central Ï1 receptors and comparison with fluoroalkyl homologs
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
EMPMAMDMTIP3RVAChTSpirocyclic piperidinesp.i.BiP - BIPN,N-dimethyltryptamine - N، N-dimethyltryptaminePost Injection - تزریق پستNeuroimaging - تصویربرداری عصبیPositron emission tomography - توموگرافی گسیل پوزیترونvesicular acetylcholine transporter - حمل کننده استیل کولین vesicularinjected dose - دوز تزریقیstructure–affinity relationship - ساختار وابستگی رابطهendoplasmatic reticulum - سلولهای اندوپلاسمیFluorine-18 - فلورین -18PET - پتBinding immunoglobulin Protein - پروتئین ایمونوگلوبولین BindingInositol 1,4,5-triphosphate receptor - گیرنده inositol 1،4،5-تری فسفات
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آلی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The spirocyclic Ï1 receptor ligand 1 (1â²-benzyl-3-(fluoromethyl)-3H-spiro[[2]benzofuran-1,4â²-piperidine]) was prepared in four steps starting from methoxy derivative 5. Due to its high Ï1 affinity (Ki = 0.74 nM) and selectivity against several other relevant targets, 1 was investigated as 18F-labeled PET tracer and its biological properties were compared with those of homologous fluoroalkyl derivatives 2-4. The fluoromethyl derivative 1 was faster metabolized in vitro than homologs 2-4. In contrast to the radiosynthesis of [18F]2-4, the nucleophilic substitution of the tosylate 15 using the K[18F]F-K222-carbonate complex required heating to 150 °C in DMSO to achieve high labeling efficiencies. Whereas radiometabolites of [18F]2-4 were not detected in vivo in the brain of mice, two radiometabolites of [18F]1 were found. Analysis of ex vivo autoradiography images provided rather low target-to-nontarget ratio for [18F]1 compared with [18F]2-4. [18F]1 showed a fast uptake in the brain, which decreased continuously over time. The brain-to-plasma ratio of the radiotracer [18F]1 was only exceeded by the fluoroethyl tracer [18F]2.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Bioorganic & Medicinal Chemistry - Volume 20, Issue 1, 1 January 2012, Pages 257-269
Journal: Bioorganic & Medicinal Chemistry - Volume 20, Issue 1, 1 January 2012, Pages 257-269
نویسندگان
Aurélie Maisonial, Eva GroÃe Maestrup, Christian Wiese, Achim Hiller, Dirk Schepmann, Steffen Fischer, Winnie Deuther-Conrad, Jörg Steinbach, Peter Brust, Bernhard Wünsch,