Evidence map›Paper›PMID 29400964›Full record

ArticleJournal of natural products2018

Total Synthesis of Scytonemide A Employing Weinreb AM Solid-Phase Resin.

Tyler A Wilson, Robert J Tokarski, Peter Sullivan, Robert M Demoret, Jimmy Orjala, L Harinantenaina Rakotondraibe, James R Fuchs

Abstract read
In one paragraph

Article in Journal of natural products, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.

0numbers the graph read from it
0cells of the map it votes in
4citing papers in PubMed
0.5field-weighted citation impact, top 44% 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

4 citing papers in PubMed, 13 citations in OpenAlex.

  1. Article
  2. Article
  3. Article
  4. 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

7 authors at 2 institutions in 1 country.

Tyler A WilsonDivision of Medicinal Chemistry & Pharmacognosy, College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States.
Robert J TokarskiDivision of Medicinal Chemistry & Pharmacognosy, College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States.
Peter SullivanDepartment of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States.
Robert M DemoretDivision of Medicinal Chemistry & Pharmacognosy, College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States.
Jimmy OrjalaDepartment of Medicinal Chemistry and Pharmacognosy, College of Pharmacy , University of Illinois at Chicago , Chicago , Illinois 60612 , United States.ORCID 0000-0002-4420-2048
L Harinantenaina RakotondraibeDivision of Medicinal Chemistry & Pharmacognosy, College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States.ORCID 0000-0003-2166-4992
James R FuchsDivision of Medicinal Chemistry & Pharmacognosy, College of Pharmacy , The Ohio State University , Columbus , Ohio 43210 , United States.ORCID 0000-0002-8743-6389
The Ohio State University · USUniversity of Illinois Chicago · US

Funding

Project 3:Isolation Chemistry of Filamentous Fungi and Biological EvaluationP01CA125066 · NCI · OHIO STATE UNIVERSITY · PI JAMES R FUCHS · 2007 to 2026
$27.2M
Research Training in Natural Product Complementary and Integrative HealthT32AT007533 · NCCIH · UNIVERSITY OF ILLINOIS AT CHICAGO · PI Joanna E Burdette, JIMMY ORJALA · 2013 to 2026
$4.3M
CHEMISTRY/BIOLOGY TRAINING GRANTT32GM008512 · NIGMS · OHIO STATE UNIVERSITY · PI PEI, DEHUA · 1996 to 2016
$3.9M
NCCIH NIH HHS T32 AT007533NCI NIH HHS P01 CA125066
6 · The paper itself

Abstract

The human 20S proteasome inhibitor scytonemide A (1), a macrocyclic imine originally isolated from the cyanobacterium Scytonema hofmanni, was synthesized via a biomimetic solid-phase peptide synthesis (SPPS) approach employing the Weinreb AM resin. Utilizing this approach, cyclization of the protected heptapeptide via formation of the imine bond occurred spontaneously upon cleavage from the resin in the presence of a reducing agent and subsequent aqueous workup. The final deprotection step necessary to produce the natural product was accomplished under slightly basic conditions, facilitating cleavage of the silyl ether group while leaving the macrocycle intact. Purification of the synthetic scytonemide A was accomplished via normal-phase flash column chromatography, potentially facilitating larger scale preparation of the compound necessary for future mechanistic and SAR studies. The structure of the target compound was confirmed by NMR spectroscopy, which also shed light on differences in the spectroscopic data obtained for the synthetic and natural scytonemide A samples for some of the amide and alcohol signals in the

Indexed as

AmidesCyclizationDepsipeptidesHumansProteasome InhibitorsResins, PlantSolid-Phase Synthesis TechniquesAmidesDepsipeptidesProteasome InhibitorsResins, Plantscytonemide A

Identifiers

PMID29400964
PMCPMC5866229
OpenAlexW2786076688

What OpenQuestion holds

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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.