Evidence map›Paper›PMID 21214204›Full record

ArticleJournal of medicinal chemistry2011

Synthesis and biological evaluation of a new series of 1,2,4-triazolo[1,5-a]-1,3,5-triazines as human A(2A) adenosine receptor antagonists with improved water solubility.

Stephanie Federico, Silvia Paoletta, Siew Lee Cheong, Giorgia Pastorin, Barbara Cacciari, Stefano Stragliotto, Karl Norbert Klotz, Jeffrey Siegel, Zhan-Guo Gao, Kenneth A Jacobson and 2 more

Open access · greenAbstract read
In one paragraph

Article in Journal of medicinal chemistry, 2011. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 5 papers.

0numbers the graph read from it
0cells of the map it votes in
5citing papers in PubMed
3.3field-weighted citation impact, top 9% 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

5 citing papers in PubMed, 32 citations in OpenAlex.

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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

12 authors at 7 institutions in 4 countries.

Stephanie FedericoDipartimento di Scienze Farmaceutiche, Università di Trieste, Piazzale Europa 1, I-34127 Trieste, Italy.
Silvia Paoletta
Siew Lee Cheong
Giorgia Pastorin
Barbara Cacciari
Stefano Stragliotto
Karl Norbert Klotz
Jeffrey Siegel
Zhan-Guo Gao
Kenneth A Jacobson
Stefano Moro
Giampiero Spalluto
University of Padua · ITNational Institutes of Health · USNational University of Singapore · SGUniversity of Trieste · ITNational Institute of Diabetes and Digestive and Kidney Diseases · USUniversity of Ferrara · ITUniversity of Würzburg · DE

Funding

Development Of Drugs Acting At Adenosine ReceptorsZIADK031117 · NIDDK · NATIONAL INSTITUTE OF DIABETES AND DIGESTIVE AND KIDNEY DISEASES · PI JACOBSON, KENNETH ALAN · 2009 to 2025
$10.4M
Intramural NIH HHS Z99 DA999999Intramural NIH HHS Z99 DK999999Intramural NIH HHS Z99 OD999999Intramural NIH HHS ZIA DK031117
6 · The paper itself

Abstract

The structure-activity relationship (SAR) of 1,2,4-triazolo[1,5-a]-1,3,5-triazine derivatives related to ZM241385 as antagonists of the A(2A) adenosine receptor (AR) was explored through the synthesis of analogues substituted at the 5 position. The A(2A) AR X-ray structure was used to propose a structural basis for the activity and selectivity of the analogues and to direct the synthetic design strategy to provide access to solvent-exposed regions. Thus, we have identified a point of substitution for the attachment of solubilizing groups to enhance both aqueous solubility and physicochemical properties, maintaining potent interactions with the A(2A) AR and, in some cases, receptor subtype selectivity. Among the most potent and selective novel compounds were a long-chain ether-containing amine congener 20 (K(i) 11.5 nM) and its urethane-protected derivative 14 (K(i) 17.8 nM). Compounds 20 and 31 (K(i) 11.5 and 16.9 nM, respectively) were readily water-soluble up to 10 mM. The analogues were docked in the crystallographic structure of the hA(2A) AR and in a homology model of the hA(3) AR, and the per residue electrostatic and hydrophobic contributions to the binding were assessed and stabilizing factors were proposed.

Indexed as

Adenosine A2 Receptor AntagonistsAnimalsCHO CellsCricetinaeCricetulusCrystallography, X-RayHEK293 CellsHumansHydrophobic and Hydrophilic InteractionsModels, MolecularProtein BindingProtein ConformationRadioligand AssaySolubilityStatic ElectricityStructure-Activity RelationshipAdenosine A2 Receptor AntagonistsTriazinesTriazolesWater

Identifiers

PMID21214204
PMCPMC3578427
OpenAlexW1996834851

What OpenQuestion holds

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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.