Evidence map›Paper›PMID 41213656›Full record

ArticleMagnetic resonance in chemistry : MRC2026

Structure Elucidation of Biflavones With Ether Bonds by NMR-Spectroscopy-Structure Revisions of Loniflavone and Methylloniflavone.

Olaf Kunert, Klaus Zangger, Lisa Haas, Fabian Alperth, Eva Pferschy-Wenzig, Franz Bucar

Abstract read
PubMed Full text at PMC Publisher
In one paragraph

Article in Magnetic resonance in chemistry : MRC, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.

0numbers the graph read from it
0cells of the map it votes in
1citing 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

1 citing paper in PubMed.

  1. Article
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.

Olaf KunertDept. of Pharmaceutical Chemistry, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
Klaus ZanggerDept. of Organic and Bioorganic Chemistry, Institute of Chemistry, University of Graz, Graz, Austria.
Lisa HaasDept. of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
Fabian AlperthDept. of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
Eva Pferschy-WenzigDept. of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.
Franz BucarDept. of Pharmacognosy, Institute of Pharmaceutical Sciences, University of Graz, Graz, Austria.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

For the structure elucidation of biflavones in which the subunits are linked by an ether bridge, two NMR spectroscopic approaches are shown to determine the position of the ether bridge, without derivatization of the compound. We show that the structures of the biflavones loniflavone and methylloniflavone, isolated from the leaves of Lonicera japonica Thunb. (Caprifoliaceae), have to be revised to ochnaflavone and methylochnaflavone, respectively.

Indexed as

BiflavonoidsEthersFlavonesFlavonoidsMagnetic Resonance SpectroscopyMolecular StructurePlant LeavesBiflavonoidsEthersFlavonesFlavonoids

Identifiers

PMID41213656
PMCPMC12783951

What OpenQuestion holds

Textmetadata
LicenceCC BY-NC-ND
Read underepoch 390

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.