Evidence map›Paper›PMID 31896661›Full record

ArticleScience (New York, N.Y.)2020

Total synthesis reveals atypical atropisomerism in a small-molecule natural product, tryptorubin A.

Solomon H Reisberg, Yang Gao, Allison S Walker, Eric J N Helfrich, Jon Clardy, Phil S Baran

Abstract read
In one paragraph

Article in Science (New York, N.Y.), 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 41 papers.

0numbers the graph read from it
0cells of the map it votes in
41citing 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

41 citing papers in PubMed.

  1. Review
  2. Article
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  11. Total Synthesis and Stereochemical Assignment of Enteropeptin A.Journal of the American Chemical Society · 2024
    Article
  12. Review
  13. The Final Stereogenic Unit of [2]Rotaxanes: Type 2 Geometric Isomers.Journal of the American Chemical Society · 2024
    Article
  14. Article
  15. Article
  16. Review
  17. Article
  18. Article
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  20. 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

6 authors.

Solomon H ReisbergDepartment of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA.ORCID 0000-0003-0017-3414
Yang GaoDepartment of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA.
Allison S WalkerDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.ORCID 0000-0001-5666-7232
Eric J N HelfrichDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA.ORCID 0000-0001-8751-3279
Jon ClardyDepartment of Biological Chemistry and Molecular Pharmacology, Harvard Medical School, Boston, MA 02115, USA. jon_clardy@hms.harvard.edu pbaran@scripps.edu.ORCID 0000-0003-0213-8356
Phil S BaranDepartment of Chemistry, The Scripps Research Institute, La Jolla, CA 92037, USA. jon_clardy@hms.harvard.edu pbaran@scripps.edu.ORCID 0000-0001-9193-9053

Funding

Scalable Synthesis and New Bond DisconnectionsR35GM118176 · NIGMS · SCRIPPS RESEARCH INSTITUTE, THE · PI BARAN, PHIL S · 2016 to 2025
$11.5M
Chemical biology of bacterial symbiontsR01AT009874 · NCCIH · HARVARD MEDICAL SCHOOL · PI CLARDY, JON · 2017 to 2019
$1.2M
Bioinformatics and Chemical Biology Approaches for Identifying Bioactive Natural Products of Symbiotic ActinobacteriaF32GM128267 · NIGMS · HARVARD MEDICAL SCHOOL · PI WALKER, ALLISON SARA · 2018 to 2020
$185k
NCCIH NIH HHS R01 AT009874NIGMS NIH HHS F32 GM128267NIGMS NIH HHS R35 GM118176
6 · The paper itself

Abstract

Molecular shape defines function in both biological and material settings, and chemists have developed an ever-increasing vernacular to describe these shapes. Noncanonical atropisomers-shape-defined molecules that are formally topologically trivial but are interconvertible only by complex, nonphysical multibond torsions-form a unique subset of atropisomers that differ from both canonical atropisomers (e.g., binaphthyls) and topoisomers (i.e., molecules that have identical connectivity but nonidentical molecular graphs). Small molecules, in contrast to biomacromolecules, are not expected to exhibit such ambiguous shapes. Using total synthesis, we found that the peptidic alkaloid tryptorubin A can be one of two noncanonical atropisomers. We then devised a synthetic strategy that drives the atropospecific synthesis of a noncanonical atrop-defined small molecule.

Indexed as

Amino Acid SequenceBiological ProductsPeptides, CyclicStereoisomerismStreptomycesXanthomonasBiological ProductsPeptides, Cyclictryptorubin A

Identifiers

PMID31896661
PMCPMC6996792

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Registered trials

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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.