Evidence map›Paper›PMID 27479323›Full record

ArticleNature2016

Oxidative diversification of amino acids and peptides by small-molecule iron catalysis.

Thomas J Osberger, Donald C Rogness, Jeffrey T Kohrt, Antonia F Stepan, M Christina White

Open access · greenAbstract read
In one paragraph

Article in Nature, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 71 papers.

0numbers the graph read from it
0cells of the map it votes in
71citing papers in PubMed
20.5field-weighted citation impact, top 1% 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

71 citing papers in PubMed, 270 citations in OpenAlex.

  1. Functionalization of Peptides via Radical Arylation.Chembiochem : a European journal of chemical biology · 2026
    Review
  2. Article
  3. Article
  4. B(COrganic letters · 2026
    Article
  5. Making Blank Faces Expressive: Chemical Approaches to the Modification of Chemically Inert Peptides.Journal of peptide science : an official publication of the European Peptide Society · 2026
    Review
  6. Chemical Tagging ofJournal of the American Chemical Society · 2025
    Article
  7. Oxoammonium-Catalyzed Oxidation ofJournal of the American Chemical Society · 2024
    Article
  8. Article
  9. α,β-Desaturation and Formal β-C(spJournal of the American Chemical Society · 2024
    Article
  10. Article
  11. Review
  12. Review
  13. Review
  14. Article
  15. Article
  16. Article
  17. Article
  18. Article
  19. Article
  20. Article

11 more citing papers are in PubMed but not listed here.

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 at 2 institutions in 1 country.

Thomas J OsbergerDepartment of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
Donald C RognessDepartment of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
Jeffrey T KohrtPfizer Worldwide Research and Development, Groton Laboratories, Eastern Point Road, Groton, Connecticut 06340, USA.
Antonia F StepanWorldwide Medicinal Chemistry, Pfizer Worldwide Research and Development, Cambridge, Massachusetts 02139, USA.
M Christina WhiteDepartment of Chemistry, Roger Adams Laboratory, University of Illinois, Urbana, Illinois 61801, USA.
University of Illinois Urbana-Champaign · USPfizer (United States) · US

Funding

Synthetic C-H Oxidations and Functionalizations with Sustainable Metal CatalystsR01GM112492 · NIGMS · UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN · PI WHITE, MARIA · 2014 to 2016
$838k
NIGMS NIH HHS R01 GM112492
6 · The paper itself

Abstract

Secondary metabolites synthesized by non-ribosomal peptide synthetases display diverse and complex topologies and possess a range of biological activities. Much of this diversity derives from a synthetic strategy that entails pre- and post-assembly oxidation of both the chiral amino acid building blocks and the assembled peptide scaffolds. The vancomycin biosynthetic pathway is an excellent example of the range of oxidative transformations that can be performed by the iron-containing enzymes involved in its biosynthesis. However, because of the challenges associated with using such oxidative enzymes to carry out chemical transformations in vitro, chemical syntheses guided by these principles have not been fully realized in the laboratory. Here we report that two small-molecule iron catalysts are capable of facilitating the targeted C-H oxidative modification of amino acids and peptides with preservation of α-centre chirality. Oxidation of proline to 5-hydroxyproline furnishes a versatile intermediate that can be transformed to rigid arylated derivatives or flexible linear carboxylic acids, alcohols, olefins and amines in both monomer and peptide settings. The value of this C-H oxidation strategy is demonstrated in its capacity for generating diversity: four 'chiral pool' amino acids are transformed to twenty-one chiral unnatural amino acids representing seven distinct functional group arrays; late-stage C-H functionalizations of a single proline-containing tripeptide furnish eight tripeptides, each having different unnatural amino acids. Additionally, a macrocyclic peptide containing a proline turn element is transformed via late-stage C-H oxidation to one containing a linear unnatural amino acid.

Indexed as

Amino AcidsCatalysisHydroxylationIronMacrocyclic CompoundsMolecular StructurePeptidesProlineStereoisomerismAmino AcidsIronMacrocyclic CompoundsPeptidesProline

Identifiers

PMID27479323
PMCPMC5161617
OpenAlexW2483119056

What OpenQuestion holds

Textmetadata
LicenceTDM
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.