Evidence map›Paper›PMID 28537594›Full record

ArticleNature chemistry2017

Switchable regioselectivity in amine-catalysed asymmetric cycloadditions.

Zhi Zhou, Zhou-Xiang Wang, Yuan-Chun Zhou, Wei Xiao, Qin Ouyang, Wei Du, Ying-Chun Chen

Abstract read
PubMed Publisher
In one paragraph

Article in Nature chemistry, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 15 papers.

0numbers the graph read from it
0cells of the map it votes in
15citing papers in PubMed
8.0field-weighted citation impact, top 2% 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

15 citing papers in PubMed, 131 citations in OpenAlex.

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  10. Asymmetric higher-order [10 +Chemical science · 2022
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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

7 authors at 2 institutions in 1 country.

Zhi ZhouKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Zhou-Xiang WangKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Yuan-Chun ZhouKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Wei XiaoKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Qin OuyangCollege of Pharmacy, Third Military Medical University, Chongqing 400038, China.ORCID 0000-0002-1161-5102
Wei DuKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Ying-Chun ChenKey Laboratory of Drug-Targeting and Drug Delivery System of the Education Ministry, West China School of Pharmacy, and State Key Laboratory of Biotherapy, West China Hospital, Sichuan University, Chengdu 610041, China.
Sichuan University · CNArmy Medical University · CN

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Building small-molecule libraries with structural and stereogenic diversity plays an important role in drug discovery. The development of switchable intermolecular cycloaddition reactions from identical substrates in different regioselective fashions would provide an attractive protocol. However, this also represents a challenge in organic chemistry, because it is difficult to control regioselectivity to afford the products exclusively and at the same time achieve high levels of stereoselectivity. Here, we report the diversified cycloadditions of α'-alkylidene-2-cyclopentenones catalysed by cinchona-derived primary amines. An asymmetric γ,β'-regioselective intermolecular [6+2] cycloaddition reaction with 3-olefinic (7-aza)oxindoles is realized through the in situ generation of formal 4-aminofulvenes, while a different β,γ-regioselective [2+2] cycloaddition reaction with maleimides to access fused cyclobutanes is disclosed. In contrast, an intriguing α,γ-regioselective [4+2] cycloaddition reaction is uncovered with the same set of substrates, by employing an unprecedented dual small-molecule catalysis of amines and thiols. All of the cycloaddition reactions exhibit excellent regio- and stereoselectivity, producing a broad spectrum of chiral architectures with high structural diversity and molecular complexity.

Identifiers

PMID28537594
OpenAlexW2574546516

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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.