Evidence map›Paper›PMID 34385352›Full record

ArticleScience (New York, N.Y.)2021

Photomediated ring contraction of saturated heterocycles.

Justin Jurczyk, Michaelyn C Lux, Donovon Adpressa, Sojung F Kim, Yu-Hong Lam, Charles S Yeung, Richmond Sarpong

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 63 papers.

0numbers the graph read from it
0cells of the map it votes in
63citing 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

63 citing papers in PubMed.

  1. Review
  2. Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Lactam Framework Editing via Formal Methylene Deletion.Journal of the American Chemical Society · 2026
    Article
  8. Article
  9. Article
  10. Article
  11. Article
  12. Article
  13. Article
  14. Skeletal Editing by Tip-Induced Chemistry.Journal of the American Chemical Society · 2025
    Article
  15. Article
  16. Article
  17. Review
  18. Article
  19. Article
  20. Article

3 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

7 authors.

Justin JurczykDepartment of Chemistry, University of California, Berkeley, CA 94720, USA.ORCID 0000-0002-2255-435X
Michaelyn C LuxDiscovery Chemistry, Merck & Co., Inc., Boston, MA 02115, USA.ORCID 0000-0002-3001-2243
Donovon AdpressaAnalytical Research and Development, Merck & Co. Inc., Boston, MA 02115, USA.ORCID 0000-0002-0081-4923
Sojung F KimDepartment of Chemistry, University of California, Berkeley, CA 94720, USA.ORCID 0000-0001-5089-8259
Yu-Hong LamComputational and Structural Chemistry, Merck & Co. Inc., Rahway, NJ 07065, USA. yu.hong.lam@merck.com charles.yeung@merck.com rsarpong@berkeley.edu.ORCID 0000-0002-4946-1487
Charles S YeungDiscovery Chemistry, Merck & Co., Inc., Boston, MA 02115, USA. yu.hong.lam@merck.com charles.yeung@merck.com rsarpong@berkeley.edu.ORCID 0000-0001-7320-7190
Richmond SarpongDepartment of Chemistry, University of California, Berkeley, CA 94720, USA. yu.hong.lam@merck.com charles.yeung@merck.com rsarpong@berkeley.edu.ORCID 0000-0002-0028-6323

Funding

Strategies and Methods for Complex Molecule Synthesis: Acquisition of a 400 MHz Nuclear Magnetic Resonance Spectrometer ConsoleR35GM130345 · NIGMS · UNIVERSITY OF CALIFORNIA BERKELEY · PI Richmond Sarpong · 2019 to 2026
$5.4M
NIGMS NIH HHS R35 GM130345
6 · The paper itself

Abstract

Saturated heterocycles are found in numerous therapeutics and bioactive natural products and are abundant in many medicinal and agrochemical compound libraries. To access new chemical space and function, many methods for functionalization on the periphery of these structures have been developed. Comparatively fewer methods are known for restructuring their core framework. Herein, we describe a visible light-mediated ring contraction of α-acylated saturated heterocycles. This unconventional transformation is orthogonal to traditional ring contractions, challenging the paradigm for diversification of heterocycles including piperidine, morpholine, thiane, tetrahydropyran, and tetrahydroisoquinoline derivatives. The success of this Norrish type II variant rests on reactivity differences between photoreactive ketone groups in specific chemical environments. This strategy was applied to late-stage remodeling of pharmaceutical derivatives, peptides, and sugars.

Identifiers

PMID34385352
PMCPMC8627180

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.