Evidence map›Paper›PMID 24491146›Full record

ArticleJournal of medicinal chemistry2014

Imaging evaluation of 5HT2C agonists, [(11)C]WAY-163909 and [(11)C]vabicaserin, formed by Pictet-Spengler cyclization.

Ramesh Neelamegam, Tim Hellenbrand, Frederick A Schroeder, Changning Wang, Jacob M Hooker

Abstract read
In one paragraph

Article in Journal of medicinal chemistry, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing 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

16 citing papers in PubMed.

  1. Article
  2. Article
  3. Synthesis and Evaluation of [Frontiers in neuroscience · 2021
    Article
  4. The Pictet-Spengler Reaction Updates Its Habits.Molecules (Basel, Switzerland) · 2020
    Review
  5. Article
  6. Article
  7. Chemistry for Positron Emission Tomography: Recent Advances inAngewandte Chemie (International ed. in English) · 2019
    Review
  8. Review
  9. Article
  10. Article
  11. Article
  12. Article
  13. Review
  14. Article
  15. A philosophy for CNS radiotracer design.Accounts of chemical research · 2014
    Review
  16. PET tracers for serotonin receptors and their applications.Central nervous system agents in medicinal chemistry · 2014
    Review
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.

Ramesh NeelamegamDepartment of Radiology, Athinoula A. Martinos Center for Biomedical Imaging, Massachusetts General Hospital and Harvard Medical School , Charlestown, Massachusetts 02129, United States.
Tim Hellenbrand
Frederick A Schroeder
Changning Wang
Jacob M Hooker

Funding

Project 4P41EB015896 · NIBIB · MASSACHUSETTS GENERAL HOSPITAL · PI ROSEN, BRUCE R · 2012 to 2018
$9.8M
Combined MRI/PET Imager for Simultaneous Acquisition of PET/MRI DataS10RR022976 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI JENKINS, BRUCE · 2007 to 2007
$2.0M
Inveon: A Triple Modality Biomedical Imaging SystemS10RR029495 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI BROWNELL, ANNA-LIISA · 2010 to 2010
$1.3M
Selective Imaging Agents for the 5HT2c ReceptorR21MH093874 · NIMH · MASSACHUSETTS GENERAL HOSPITAL · PI HOOKER, JACOB M. · 2011 to 2013
$760k
PET CAMERA FOR BRAIN IMAGING: SCHIZOPHRENIA, BIPOLAR DISORDERS10RR019933 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI SORENSEN, ALMA GREGORY · 2006 to 2006
$500k
CYCLOTRON &RADIOCHEMISTRY: SUBSTANCE ABUSE, COCAINE, OPIOIDS10RR017208 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI ROSEN, BRUCE R · 2004 to 2004
$500k
Carbon-11 Radiopharmaceutical Production SystemS10RR026666 · NCRR · MASSACHUSETTS GENERAL HOSPITAL · PI BROWNELL, ANNA-LIISA · 2010 to 2010
$462k
NCRR NIH HHS S10 RR017208NCRR NIH HHS S10RR017208NCRR NIH HHS S10RR019933NCRR NIH HHS S10 RR022976NCRR NIH HHS S10RR022976NCRR NIH HHS S10 RR026666NCRR NIH HHS S10RR026666NCRR NIH HHS S10 RR029495NCRR NIH HHS S10RR029495NIBIB NIH HHS P41 EB015896NIBIB NIH HHS P41EB015896NIMH NIH HHS R21 MH093874
6 · The paper itself

Abstract

The serotonin subtype 2C (5HT2C) receptor is an emerging and promising drug target to treat several disorders of the human central nervous system. In this current report, two potent and selective 5HT2C full agonists, WAY-163909 (2) and vabicaserin (3), were radiolabeled with carbon-11 via Pictet-Spengler cyclization with [(11)C]formaldehyde and used in positron emission tomography (PET) imaging. Reaction conditions were optimized to exclude the major source of isotope dilution caused by the previously unknown breakdown of N,N-dimethylformamide (DMF) to formaldehyde at high temperature under mildly acid conditions. In vivo PET imaging was utilized to evaluate the pharmacokinetics and distribution of the carbon-11 labeled 5HT2C agonists. Both radiolabeled molecules exhibit high blood-brain barrier (BBB) penetration and nonspecific binding, which was unaltered by preadministration of the unlabeled agonist. Our work demonstrates that Pictet-Spengler cyclization can be used to label drugs with carbon-11 to study their pharmacokinetics and for evaluation as PET radiotracers.

Indexed as

AzepinesCarbon RadioisotopesCyclizationHeterocyclic Compounds, 4 or More RingsIndolesPositron-Emission TomographySerotonin Receptor Agonists1,2,3,4,8,9,10,10a-octahydro-7bH-cyclopenta(b)(1,4)diazepino(6,7,1hj)indoleAzepinesCarbon RadioisotopesHeterocyclic Compounds, 4 or More RingsIndolesSerotonin Receptor Agonistsvabicaserin

Identifiers

PMID24491146
PMCPMC3983360

What OpenQuestion holds

Textmetadata
Read underepoch 390

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.