Evidence map›Paper›PMID 22011654›Full record

ArticleNature protocols2011

Preparation of 18F-labeled peptides using the copper(I)-catalyzed azide-alkyne 1,3-dipolar cycloaddition.

Herman S Gill, Jan Marik

Abstract read
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In one paragraph

Article in Nature protocols, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 22 papers.

0numbers the graph read from it
0cells of the map it votes in
22citing papers in PubMed
3.5field-weighted citation impact, top 8% of its field
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

22 citing papers in PubMed, 46 citations in OpenAlex.

  1. Article
  2. Article
  3. A proof-of-concept study on the use of a fluorescein-basedEJNMMI radiopharmacy and chemistry · 2022
    Article
  4. Article
  5. Convenient Entry toEuropean journal of organic chemistry · 2019
    Article
  6. Chemistry (Weinheim an der Bergstrasse, Germany) · 2017
    Review
  7. Article
  8. Article
  9. Review
  10. Article
  11. Article
  12. 18F-labeling using click cycloadditions.BioMed research international · 2014
    Review
  13. Review
  14. Peptide conjugation via CuAAC 'click' chemistry.Molecules (Basel, Switzerland) · 2013
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. 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

2 authors at 1 institution.

Herman S GillDepartment of Biomedical Imaging, Genentech Research and Early Development, Genentech Inc., South San Francisco, California, USA.
Jan Marik
Genentech

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

An optimized procedure for preparing fluorine-18 ((18)F)-labeled peptides by the copper-catalyzed azide-alkyne 1,3-dipolar cyloaddition (CuAAC) is presented here. The two-step radiosynthesis begins with the microwave-assisted nucleophilic (18)F-fluorination of a precursor containing a terminal p-toluenesulfonyl, terminal azide and polyethylene glycol backbone. The resulting (18)F-fluorinated azide-containing building block is coupled to an alkyne-decorated peptide by the CuAAC. The reaction is accelerated by the copper(I)-stabilizing ligand bathophenanthroline disulfonate and can be performed in either reducing or nonreducing conditions (e.g., to preserve disulfide bonds). After an HPLC purification, (18)F-labeled peptide can be obtained with a 31 ± 6% radiochemical yield (n = 4, decay-corrected from (18)F-fluoride elution) and a specific activity of 39.0 ± 12.4 Ci μmol(-1) within 77 ± 4 min.

Indexed as

AlkynesAzidesCatalysisCopperFluorine RadioisotopesMolecular StructurePeptidesAlkynesAzidesCopperFluorine RadioisotopesPeptides

Identifiers

PMID22011654
OpenAlexW1974109632

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.