Evidence map›Paper›PMID 21845279›Full record

ArticleOrganic & biomolecular chemistry2011

Syntheses of mGluR5 PET radioligands through the radiofluorination of diaryliodonium tosylates.

Sanjay Telu, Joong-Hyun Chun, Fabrice G Siméon, Shuiyu Lu, Victor W Pike

Abstract read
In one paragraph

Article in Organic & biomolecular chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
–field-weighted citation impact
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed.

  1. Review
  2. Hypervalent aryliodine compounds as precursors for radiofluorination.Journal of labelled compounds & radiopharmaceuticals · 2018
    Review
  3. Article
  4. Article
  5. Iodonium ylide-mediated radiofluorination of 18F-FPEB and validation for human use.Journal of nuclear medicine : official publication, Society of Nuclear Medicine · 2015
    Article
  6. Review
  7. Article
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. Article
  16. Single-step Radiosyntheses of 'European journal of organic chemistry · 2012
    Article
  17. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors.

Sanjay TeluMolecular Imaging Branch, National Institute of Mental Health, National Institutes of Health, Rm. B3 C346A, 10 Center Drive, Bethesda, MD 20892-1003, USA.
Joong-Hyun Chun
Fabrice G Siméon
Shuiyu Lu
Victor W Pike

Funding

PET Radiopharmaceutical SciencesZIAMH002793 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI PIKE, VICTOR W · 2009 to 2025
$69.8M
PET Radiopharmaceutical SciencesZ01MH002793 · NIMH · NATIONAL INSTITUTE OF MENTAL HEALTH · PI PIKE, VICTOR W · 2002 to 2008
$7.4M
Intramural NIH HHS Z01 MH002793Intramural NIH HHS ZIA MH002793
6 · The paper itself

Abstract

3-Fluoro-1-((thiazol-4-yl)ethynyl)benzenes constitute an important class of high-affinity metabotropic glutamate subtype 5 receptor (mGluR5) ligands, some of which have been labeled with fluorine-18 (t(1/2) = 109.7 min), to provide radioligands for molecular imaging of brain mGluR5 in living animal and human subjects with positron emission tomography (PET). Labeling in the 3-fluoro position of such ligands can be achieved through aromatic nucleophilic substitution of a halide leaving group with [(18)F]fluoride ion when a weakly activating m-nitrile group is present, but is generally very low yielding (<8%). Here we used a microfluidic reaction platform to show that greatly enhanced (up to 6-fold) radiochemical yields can be achieved from suitably synthesized diaryliodonium tosylate precursors. The presence of a m-nitrile or other activating group is not required. Similar conditions were adopted in a more conventional automated radiochemistry platform having a single-pot reactor, to produce mGluR5 radioligands with useful radioactivities for PET imaging.

Indexed as

AlkynesAnimalsBrainChemistry Techniques, SyntheticFluorine RadioisotopesHumansLigandsMicrofluidic Analytical TechniquesMolecular StructurePositron-Emission TomographyReceptor, Metabotropic Glutamate 5Receptors, Metabotropic GlutamateStereoisomerismStructure-Activity RelationshipThiazolesAlkynesFluorine RadioisotopesGRM5 protein, humanLigandsReceptor, Metabotropic Glutamate 5Receptors, Metabotropic GlutamateThiazoles

Identifiers

PMID21845279
PMCPMC3186059

What OpenQuestion holds

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Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.