Evidence map›Paper›PMID 29244520›Full record

ArticleOrganic letters2018

Enantioselective Total Synthesis of Cannogenol-3-O-α-l-rhamnoside via Sequential Cu(II)-Catalyzed Michael Addition/Intramolecular Aldol Cyclization Reactions.

Bijay Bhattarai, Pavel Nagorny

Abstract read
In one paragraph

Article in Organic letters, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing 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

13 citing papers in PubMed.

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  9. From anOrganic letters · 2021
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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

2 authors.

Bijay BhattaraiChemistry Department, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States.ORCID 0000-0001-6972-1998
Pavel NagornyChemistry Department, University of Michigan , 930 North University Avenue, Ann Arbor, Michigan 48109, United States.ORCID 0000-0002-7043-984X

Funding

New methods and strategies for the synthesis of bioactive steroids and terpinoids SUPPLEMENTR01GM111476 · NIGMS · UNIVERSITY OF MICHIGAN AT ANN ARBOR · PI NAGORNY, PAVEL · 2014 to 2018
$1.5M
NIGMS NIH HHS R01 GM111476
6 · The paper itself

Abstract

A concise and scalable enantioselective total synthesis of the natural cardenolides cannogenol and cannogenol-3-O-α-l-rhamnoside has been achieved in 18 linear steps. The synthesis features a Cu(II)-catalyzed enantioselective and diastereoselective Michael reaction/tandem aldol cyclization and a one-pot reduction/transposition, which resulted in a rapid (6 linear steps) assembly of a functionalized intermediate containing C19 oxygenation that could be elaborated to cardenolide cannogenol. In addition, a strategy for achieving regio- and stereoselective glycosylation at the C3 position of synthetic cannogenol was developed and applied to the preparation of cannogenol-3-O-α-l-rhamnoside.

Indexed as

AldehydesCyclizationDigitoxigeninMolecular StructureStereoisomerism3-hydroxybutanalAldehydescannogenol-3-O-alpha-L-rhamnosideDigitoxigenin

Identifiers

PMID29244520
PMCPMC5768146

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.