dapsone   Click here for help

GtoPdb Ligand ID: 10934

Synonyms: Aczone® | NSC-6091
Approved drug Antimalarial Ligand
dapsone is an approved drug (FDA (1979), UK (1988))
Compound class: Synthetic organic
Comment: Dapsone is a sulfonamide-related antibacterial, antimalarial and anti-inflammatory drug. In bacteria it inhibits dihydropteroate synthase-mediated production of folic acid, which has the effect of disrupting the availability of thymidylate for DNA synthesis.

The Malaria tab on this ligand page provides additional curator comments of relevance to the Guide to MALARIA PHARMACOLOGY.
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2D Structure
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Physico-chemical Properties
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Hydrogen bond acceptors 4
Hydrogen bond donors 2
Rotatable bonds 2
Topological polar surface area 94.56
Molecular weight 248.06
XLogP 0.86
No. Lipinski's rules broken 0
SMILES / InChI / InChIKey
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Canonical SMILES Nc1ccc(cc1)S(=O)(=O)c1ccc(cc1)N
Isomeric SMILES Nc1ccc(cc1)S(=O)(=O)c1ccc(cc1)N
InChI InChI=1S/C12H12N2O2S/c13-9-1-5-11(6-2-9)17(15,16)12-7-3-10(14)4-8-12/h1-8H,13-14H2
InChI Key MQJKPEGWNLWLTK-UHFFFAOYSA-N
Bioactivity Comments
Inhibits dihydrofolate reductase activity in Pneumocystis carinii with an IC50 of 1.5 μM in vitro [4].
Selectivity at other protein targets
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Target Sp. Type Action Value Parameter Concentration range (M) Reference
Plasmodium falciparum hydroxymethyldihydropterin pyrophosphokinase-dihydropteroate synthase Pf Inhibitor Inhibition 5.2 pKi - 5
pKi 5.2 (Ki 6x10-6 M) [5]
Description: Enzyme inhibition assay.