compound 1a [WO2021204952A1]   Click here for help

GtoPdb Ligand ID: 11928

Antimalarial Ligand
Compound class: Synthetic organic
Comment: Compound 1a is from a series of novel tetrahydroisoquinoline derivatives, with antimalarial activity, claimed in patent WO2021204952A1 [1]. Antimalarial potency for this series is predominantly associated with the (+) enantiomer.

The Malaria tab on this ligand page provides additional curator comments of relevance to the Guide to MALARIA PHARMACOLOGY.
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Ligand Activity Visualisation Charts

These are box plot that provide a unique visualisation, summarising all the activity data for a ligand taken from ChEMBL and GtoPdb across multiple targets and species. Click on a plot to see the median, interquartile range, low and high data points. A value of zero indicates that no data are available. A separate chart is created for each target, and where possible the algorithm tries to merge ChEMBL and GtoPdb targets by matching them on name and UniProt accession, for each available species. However, please note that inconsistency in naming of targets may lead to data for the same target being reported across multiple charts.

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View interactive charts of activity data across species
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 6
Hydrogen bond donors 1
Rotatable bonds 8
Topological polar surface area 95.32
Molecular weight 524.15
XLogP 4.99
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 N#Cc1cc(ccc1F)NC(=O)[C@@H]1[C@@H](c2ccc(nc2)OC2CC2)N(CC(F)(F)F)C(=O)c2c1cccc2
Isomeric SMILES C1CC1Oc1ncc(cc1)[C@@H]1[C@H](c2ccccc2C(=O)N1CC(F)(F)F)C(=O)Nc1cc(c(cc1)F)C#N
InChI InChI=1S/C27H20F4N4O3/c28-21-9-6-17(11-16(21)12-32)34-25(36)23-19-3-1-2-4-20(19)26(37)35(14-27(29,30)31)24(23)15-5-10-22(33-13-15)38-18-7-8-18/h1-6,9-11,13,18,23-24H,7-8,14H2,(H,34,36)/t23-,24+/m0/s1
InChI Key KYICPNWURYGJCB-BJKOFHAPSA-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
A patent search suggests that the back-up series for (+)-SJ733, being developed by the University of Kentucky in partnership with MMV, may be covered by patent WO2021204952 [1]. Compound 1a has similar in vitro asexual blood stage potency to (+)-SJ733 together with significantly improved metabolic stability.

Potential Target/Mechanism Of Action: an increase of cytosolic sodium concentration following treatment with compound 1a is consistent with inhibition of Plasmodium non-SERCA-type Ca2+-transporting P-ATPase (PfATP4) [1].