Evidence map›Paper›PMID 34036708›Full record

ArticleAngewandte Chemie (International ed. in English)2021

The Enantioselective Synthesis of Eburnamonine, Eucophylline, and 16'-epi-Leucophyllidine.

Christopher E Reimann, Aurapat Ngamnithiporn, Kohei Hayashida, Daisuke Saito, Katerina M Korch, Brian M Stoltz

Abstract read
In one paragraph

Article in Angewandte Chemie (International ed. in English), 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing 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

7 citing papers in PubMed.

  1. Review
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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.

Christopher E ReimannWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.
Aurapat NgamnithipornWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.
Kohei HayashidaWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.
Daisuke SaitoWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.
Katerina M KorchWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.
Brian M StoltzWarren and Katharine Schlinger Laboratory for Chemistry and Chemical Engineering, Division of Chemistry and Chemical Engineering, 1200 E. California Blvd, MC 101-20, Pasadena, CA, 91125, USA.ORCID 0000-0001-9837-1528

Funding

The Synthesis of Bioactive Polycyclic Natural ProductsR01GM080269 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI STOLTZ, BRIAN M · 2007 to 2022
$5.0M
The Synthesis of Bioactive Natural Products as a Driving Force for Discovery in Organic ChemistryR35GM145239 · NIGMS · CALIFORNIA INSTITUTE OF TECHNOLOGY · PI BRIAN M STOLTZ · 2022 to 2026
$3.1M
NIGMS NIH HHS R01 GM080269NIGMS NIH HHS R35 GM145239
6 · The paper itself

Abstract

A synthetic approach to the heterodimeric bisindole alkaloid leucophyllidine is disclosed herein. An enantioenriched lactam building block, synthesized through palladium-catalyzed asymmetric allylic alkylation, served as the precursor to both hemispheres. The eburnamonine-derived fragment was synthesized through a Bischler-Napieralski/hydrogenation approach, while the eucophylline-derived fragment was synthesized by Friedländer quinoline synthesis and two sequential C-H functionalization steps. A convergent Stille coupling and phenol-directed hydrogenation united the two monomeric fragments to afford 16'-epi-leucophyllidine in 21 steps from commercial material.

Indexed as

Azabicyclo CompoundsIndole AlkaloidsMolecular StructureStereoisomerismVinca AlkaloidsAzabicyclo CompoundseburnamonineeucophyllineIndole AlkaloidsleucophyllidineVinca Alkaloidsalkaloidsconvergencecross-couplingdivergencetotal synthesis

Identifiers

PMID34036708
PMCPMC8338904

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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.