Evidence map›Paper›PMID 31218312›Full record

ArticleDalton transactions (Cambridge, England : 2003)2019

Catalytic synthesis of 9-cis-retinoids: mechanistic insights.

Shirin Kahremany, Adam Kubas, Gregory P Tochtrop, Krzysztof Palczewski

Open access · greenAbstract read
In one paragraph

Article in Dalton transactions (Cambridge, England : 2003), 2019. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
0.4field-weighted citation impact, top 47% 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

5 citing papers in PubMed, 6 citations in OpenAlex.

  1. Review
  2. Article
  3. Theoretical Study of the Photoisomerization Mechanism of All-The journal of physical chemistry. A · 2021
    Article
  4. Article
  5. 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

4 authors at 3 institutions in 2 countries.

Shirin KahremanyGavin Herbert Eye Institute, Department of Ophthalmology, University of California, Irvine, CA 92697, USA. kpalczew@uci.edu skahrema@uci.edu and Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106, USA.
Adam KubasInstitute of Physical Chemistry, Polish Academy of Sciences, Kasprzaka 44/52, 01-224 Warsaw, Poland. akubas@ichf.edu.pl.ORCID http://orcid.org/0000-0002-5508-0533
Gregory P TochtropDepartment of Chemistry, Case Western Reserve University, Cleveland, OH 44106, USA.
Krzysztof PalczewskiGavin Herbert Eye Institute, Department of Ophthalmology, University of California, Irvine, CA 92697, USA. kpalczew@uci.edu skahrema@uci.edu and Department of Pharmacology, Case Western Reserve University, Cleveland, OH 44106, USA.ORCID http://orcid.org/0000-0002-0788-545X
Irvine Valley College · USCase Western Reserve University · USInstitute of Physical Chemistry · PL

Funding

STRUCTURAL STUDIES OF ARRESTINSR01EY009339 · NEI · UNIVERSITY OF WASHINGTON · PI KISER, PHILIP DAVID, PALCZEWSKI, KRZYSZTOF · 1992 to 2025
$16.0M
Use of systems pharmacology to prevent rod and cone photoreceptor degenerationR24EY027283 · NEI · UNIVERSITY OF CALIFORNIA-IRVINE · PI PALCZEWSKI, KRZYSZTOF · 2017 to 2021
$7.9M
NEI NIH HHS R01 EY009339NEI NIH HHS R24 EY027283
6 · The paper itself

Abstract

The regioselective Z-isomerization of thermodynamically stable all-trans retinoids remains challenging, and ultimately limits the availability of much needed therapeutics for the treatment of human diseases. We present here a novel, straightforward approach for the catalytic Z-isomerization of retinoids using conventional heat treatment or microwave irradiation. A screen of 20 transition metal-based catalysts identified an optimal approach for the regioselective production of Z-retinoids. The most effective catalytic system was comprised of a palladium complex with labile ligands. Several mechanistic studies, including isotopic H/D exchange and state-of-the-art quantum chemical calculations using coupled cluster methods indicate that the isomerization is initiated by catalyst dimerization followed by the formation of a cyclic, six-membered chloropalladate catalyst-substrate adduct, which eventually opens to produce the desired Z-isomer. The synthetic development described here, combined with thorough mechanistic analysis of the underlying chemistry, highlights the use of readily available transition metal-based catalysts in straightforward formats for gram-scale drug synthesis.

Identifiers

PMID31218312
PMCPMC7004310
OpenAlexW2949024993

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.