Evidence map›Paper›PMID 26425179›Full record

ArticleBeilstein journal of organic chemistry2015

Synthesis of icariin from kaempferol through regioselective methylation and para-Claisen-Cope rearrangement.

Qinggang Mei, Chun Wang, Zhigang Zhao, Weicheng Yuan, Guolin Zhang

Abstract read
In one paragraph

Article in Beilstein journal of organic chemistry, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 6 papers.

0numbers the graph read from it
0cells of the map it votes in
6citing 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

6 citing papers in PubMed.

  1. Design principles for enantiospecificOrganic chemistry frontiers : an international journal of organic chemistry · 2026
    Article
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  4. 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

5 authors.

Qinggang MeiChengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China ; Chengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.
Chun WangChengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.
Zhigang ZhaoCollege of Chemistry and Environmental Protection Engineering, Southwest University for Nationalities, Chengdu 610041, China.
Weicheng YuanChengdu Institute of Organic Chemistry, Chinese Academy of Sciences, Chengdu 610041, China.
Guolin ZhangChengdu Institute of Biology, Chinese Academy of Sciences, Chengdu 610041, China.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The hemisynthesis of the naturally occurring bioactive flavonoid glycoside icariin (1) has been accomplished in eleven steps with 7% overall yield from kaempferol. The 4'-OH methylation of kaempferol, the 8-prenylation of 3-O-methoxymethyl-4'-O-methyl-5-O-prenyl-7-O-benzylkaempferol (8) via para-Claisen-Cope rearrangement catalyzed by Eu(fod)3 in the presence of NaHCO3, and the glycosylation of icaritin (3) are the key steps.

Indexed as

Claisen–Cope rearrangementflavonolicariinprenylationregioselectivity

Identifiers

PMID26425179
PMCPMC4578360

What OpenQuestion holds

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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.