pyronaridine   Click here for help

GtoPdb Ligand ID: 10086

Synonyms: 7351 | Malaridine®
Antimalarial Ligand
Compound class: Synthetic organic
Comment: Pyronaridine is a benzonaphthyridine derivative with potent antimalarial activity.

The Malaria tab on this ligand page provides additional curator comments of relevance to the Guide to MALARIA PHARMACOLOGY.
2D Structure
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2D Structure

An image of the ligand's 2D structure. For small molecules with SMILES these are drawn using the NCI/CADD Chemical Identifier Resolver. Click on the image to access the chemical structure search tool with the ligand pre-loaded in the structure editor. For other types of ligands, e.g. longer nucleotides and peptides, a manually drawn representation of the molecule may be provided.

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Physico-chemical Properties
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Physico-chemical Properties

Calculated molecular properties are available for small molecules and natural products (not peptides). Properties were generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/). All properties were selected to enable the prediction of the Lipinski Rule-of-Five profile or ‘druglikeness’ for each ligand. For more info on each category see the help pages.

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Hydrogen bond acceptors 5
Hydrogen bond donors 2
Rotatable bonds 7
Topological polar surface area 73.75
Molecular weight 517.22
XLogP 4.9
No. Lipinski's rules broken 0

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
SMILES / InChI / InChIKey
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SMILES / InChI / InChIKey

SMILES (Simplified Molecular Input Line Entry Specification) A specification for unambiguously describing the structure of chemical molecules using short ASCII strings. Canonical SMILES specify a unique representation of the 2D structure without chiral or isotopic specifications. Isomeric SMILES include chiral specification and isotopes.

Standard InChI (IUPAC International Chemical Identifier) and InChIKey InChI is a non-proprietary, standard, textual identifier for chemical substances designed to facilitate linking of information and database searching. An InChIKey is a simplified version of a full InChI, designed for easier web searching.

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)

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Canonical SMILES COc1ccc2c(n1)c(Nc1cc(CN3CCCC3)c(c(c1)CN1CCCC1)O)c1c(n2)cc(cc1)Cl
Isomeric SMILES COc1ccc2c(n1)c(Nc1cc(CN3CCCC3)c(c(c1)CN1CCCC1)O)c1c(n2)cc(cc1)Cl
InChI InChI=1S/C29H32ClN5O2/c1-37-26-9-8-24-28(33-26)27(23-7-6-21(30)16-25(23)32-24)31-22-14-19(17-34-10-2-3-11-34)29(36)20(15-22)18-35-12-4-5-13-35/h6-9,14-16,36H,2-5,10-13,17-18H2,1H3,(H,31,32)
InChI Key DJUFPMUQJKWIJB-UHFFFAOYSA-N

Generated using the Chemistry Development Kit (CDK) (Willighagen EL et al. Journal of Cheminformatics vol. 9:33. 2017, doi:10.1186/s13321-017-0220-4; https://cdk.github.io/)
Guide to Malaria Pharmacology Comments
Pyronaridine was synthesized in the early 1970s in China (as part of Project 523) and used in that jurisdiction for the treatment of malaria as a monotherapy. Clinical data show excellent antimalarial efficacy against P. falciparum (including chloroquine resistant strains) and combination therapy studies also show promise against P. vivax [1].
Pyronaridine is listed in the World Health Organisation's 21st Essential Medicines List (2019) as an antimalarial for curative treatment in combination with artesunate (trade name Pyramax®). This is one of the new artemisinin-based combination therapies (ACTs) registered and used in some countries but not yet recommended by the WHO for unrestricted use [3].