Evidence map›Paper›PMID 34459148›Full record

ArticleChemMedChem2021

Exploration of Pyrazolo[1,5-a]pyrimidines as Membrane-Bound Pyrophosphatase Inhibitors.

Niklas G Johansson, Loïc Dreano, Keni Vidilaseris, Ayman Khattab, Jianing Liu, Arthur Lasbleiz, Orquidea Ribeiro, Alexandros Kiriazis, Gustav Boije Af Gennäs, Seppo Meri and 3 more

Open access · hybridAbstract read
In one paragraph

Article in ChemMedChem, 2021. 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
1.4field-weighted citation impact, top 19% 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, 16 citations in OpenAlex.

  1. Access to Pyrazolo[1,5-Organic letters · 2026
    Article
  2. Article
  3. Article
  4. Regioselective C(spRSC advances · 2024
    Article
  5. 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

13 authors at 2 institutions in 2 countries.

Niklas G JohanssonDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.ORCID 0000-0002-8226-4813
Loïc DreanoDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.
Keni VidilaserisDepartment of Biosciences, Division of Biochemistry, University of Helsinki, P.O. Box 56 (Viikinkaari 9), 00014, Helsinki, Finland.ORCID 0000-0002-6453-6600
Ayman KhattabMalaria Research Laboratory, Translational Immunology Research Program, Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, P.O. Box 21 (Haartmaninkatu 3), 00014, Helsinki, Finland.ORCID 0000-0002-3980-8379
Jianing LiuDepartment of Biosciences, Division of Biochemistry, University of Helsinki, P.O. Box 56 (Viikinkaari 9), 00014, Helsinki, Finland.
Arthur LasbleizDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.
Orquidea RibeiroDepartment of Biosciences, Division of Biochemistry, University of Helsinki, P.O. Box 56 (Viikinkaari 9), 00014, Helsinki, Finland.ORCID 0000-0003-0746-6666
Alexandros KiriazisDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.ORCID 0000-0002-2488-1506
Gustav Boije Af GennäsDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.ORCID 0000-0002-0099-6085
Seppo MeriMalaria Research Laboratory, Translational Immunology Research Program, Department of Bacteriology and Immunology, Haartman Institute, University of Helsinki, P.O. Box 21 (Haartmaninkatu 3), 00014, Helsinki, Finland.ORCID 0000-0001-9142-501X
Adrian GoldmanDepartment of Biosciences, Division of Biochemistry, University of Helsinki, P.O. Box 56 (Viikinkaari 9), 00014, Helsinki, Finland.ORCID 0000-0001-8032-9700
Jari Yli-KauhaluomaDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.ORCID 0000-0003-0370-7653
Henri XhaardDrug Research Program, Division of Pharmaceutical Chemistry and Technology, Faculty of Pharmacy, University of Helsinki, P.O. Box 56 (Viikinkaari 5 E), 00014, Helsinki, Finland.ORCID 0000-0002-3000-7858
University of Helsinki · FIUniversity of Leeds · GB

Funding

Academy of Finland 1322609Academy of Finland 1323237Academy of Finland 265481Academy of Finland 308105Academy of Finland 310297Biotechnology and Biological Sciences Research Council BB/M021610/1
6 · The paper itself

Abstract

Inhibition of membrane-bound pyrophosphatase (mPPase) with small molecules offer a new approach in the fight against pathogenic protozoan parasites. mPPases are absent in humans, but essential for many protists as they couple pyrophosphate hydrolysis to the active transport of protons or sodium ions across acidocalcisomal membranes. So far, only few nonphosphorus inhibitors have been reported. Here, we explore the chemical space around previous hits using a combination of screening and synthetic medicinal chemistry, identifying compounds with low micromolar inhibitory activities in the Thermotoga maritima mPPase test system. We furthermore provide early structure-activity relationships around a new scaffold having a pyrazolo[1,5-a]pyrimidine core. The most promising pyrazolo[1,5-a]pyrimidine congener was further investigated and found to inhibit Plasmodium falciparum mPPase in membranes as well as the growth of P. falciparum in an ex vivo survival assay.

Indexed as

Dose-Response Relationship, DrugHumansMolecular StructurePyrazolesPyrimidinesPyrophosphatasesStructure-Activity RelationshipPyrazolespyrazolo(1,5-a)pyrimidinePyrimidinesPyrophosphatasesantiprotozoal agentsdrug discoveryinhibitormembrane-bound pyrophosphatasepyrazolo[1,5-a]pyrimidine

Identifiers

PMID34459148
PMCPMC8597055
OpenAlexW3193623495

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.