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Record Information
Version5.0
StatusDetected but not Quantified
Creation Date2021-09-11 13:21:16 UTC
Update Date2021-09-26 23:07:58 UTC
HMDB IDHMDB0254167
Secondary Accession NumbersNone
Metabolite Identification
Common NameLosmapimod
DescriptionLosmapimod belongs to the class of organic compounds known as phenylpyridines. These are polycyclic aromatic compounds containing a benzene ring linked to a pyridine ring through a CC or CN bond. In April 2019, Fulcrum Therapeutics acquired from GSK the global rights to Losmapimod after identifying p38α/β MAPK inhibitors as potent suppressors of DUX4 expression, the de-suppression of which is theorized to cause Facioscapulohumeral muscular dystrophy (FSHD). Losmapimod is a moderately basic compound (based on its pKa). GSK investigated losmapimod as a therapeutic for major depressive disorder (MDD) on the basis of depression being correlated with elevated pro-inflammatory cytokines. However, these trials showed that losmapimod is generally well-tolerated. As of October 2019, Fulcrum is conducting two clinical trials of losmapimod for treatment of FSHD. GSK terminated development of losmapimod for COPD in 2016. GSK investigated losmapimod as a therapeutic for patients post-myocardial infarction (heart attack). Losmapimod has been shown to be potentially useful in overcoming gefitinib resistance in non-small-cell lung carcinoma. One trial, ReDUX4, is evaluating drug efficacy in a randomized controlled phase IIb clinical trial with an estimated study completion date of August 2020. Losmapimod (GW856553X) is a drug developed by GlaxoSmithKline (GSK) that selectively inhibits enzymes p38α/β mitogen-activated protein kinases (MAPKs), which are mediators of inflammation. This compound has been identified in human blood as reported by (PMID: 31557052 ). Losmapimod is not a naturally occurring metabolite and is only found in those individuals exposed to this compound or its derivatives. Technically Losmapimod is part of the human exposome. The exposome can be defined as the collection of all the exposures of an individual in a lifetime and how those exposures relate to health. An individual's exposure begins before birth and includes insults from environmental and occupational sources.
Structure
Thumb
Synonyms
ValueSource
GW-856553GSK-AHABChEMBL
GW856553XChEMBL
GSK-AHABMeSH
6-(5-((cyclopropylamino)Carbonyl)-3-fluoro-2-methylphenyl)-N-(2,2-dimethylprpyl)-3-pyridinecarboxamideMeSH
Chemical FormulaC22H26FN3O2
Average Molecular Weight383.467
Monoisotopic Molecular Weight383.200905252
IUPAC Name6-[5-(cyclopropylcarbamoyl)-3-fluoro-2-methylphenyl]-N-(2,2-dimethylpropyl)pyridine-3-carboxamide
Traditional Namelosmapimod
CAS Registry NumberNot Available
SMILES
CC1=C(C=C(C=C1F)C(=O)NC1CC1)C1=CC=C(C=N1)C(=O)NCC(C)(C)C
InChI Identifier
InChI=1S/C22H26FN3O2/c1-13-17(9-15(10-18(13)23)21(28)26-16-6-7-16)19-8-5-14(11-24-19)20(27)25-12-22(2,3)4/h5,8-11,16H,6-7,12H2,1-4H3,(H,25,27)(H,26,28)
InChI KeyKKYABQBFGDZVNQ-UHFFFAOYSA-N
Chemical Taxonomy
Description Belongs to the class of organic compounds known as phenylpyridines. These are polycyclic aromatic compounds containing a benzene ring linked to a pyridine ring through a CC or CN bond.
KingdomOrganic compounds
Super ClassOrganoheterocyclic compounds
ClassPyridines and derivatives
Sub ClassPhenylpyridines
Direct ParentPhenylpyridines
Alternative Parents
Substituents
  • 2-phenylpyridine
  • 3-halobenzoic acid or derivatives
  • Halobenzoic acid or derivatives
  • Nicotinamide
  • Pyridinecarboxamide
  • Pyridine carboxylic acid or derivatives
  • Benzamide
  • Benzoic acid or derivatives
  • Toluamide
  • P-toluamide
  • Benzoyl
  • Toluene
  • Halobenzene
  • Fluorobenzene
  • Aryl halide
  • Benzenoid
  • Aryl fluoride
  • Monocyclic benzene moiety
  • Heteroaromatic compound
  • Carboxamide group
  • Secondary carboxylic acid amide
  • Azacycle
  • Carboxylic acid derivative
  • Organonitrogen compound
  • Organic nitrogen compound
  • Organooxygen compound
  • Hydrocarbon derivative
  • Organic oxide
  • Organopnictogen compound
  • Organic oxygen compound
  • Organofluoride
  • Organohalogen compound
  • Aromatic heteromonocyclic compound
Molecular FrameworkAromatic heteromonocyclic compounds
External DescriptorsNot Available
Ontology
Physiological effectNot Available
Disposition
ProcessNot Available
RoleNot Available
Physical Properties
StateNot Available
Experimental Molecular Properties
PropertyValueReference
Melting PointNot AvailableNot Available
Boiling PointNot AvailableNot Available
Water SolubilityNot AvailableNot Available
LogPNot AvailableNot Available
Experimental Chromatographic PropertiesNot Available
Predicted Molecular Properties
PropertyValueSource
logP3.5ALOGPS
logP3.68ChemAxon
logS-5ALOGPS
pKa (Strongest Acidic)13.86ChemAxon
pKa (Strongest Basic)2.6ChemAxon
Physiological Charge0ChemAxon
Hydrogen Acceptor Count3ChemAxon
Hydrogen Donor Count2ChemAxon
Polar Surface Area71.09 ŲChemAxon
Rotatable Bond Count6ChemAxon
Refractivity107.23 m³·mol⁻¹ChemAxon
Polarizability42.79 ųChemAxon
Number of Rings3ChemAxon
BioavailabilityYesChemAxon
Rule of FiveYesChemAxon
Ghose FilterYesChemAxon
Veber's RuleNoChemAxon
MDDR-like RuleYesChemAxon
Predicted Chromatographic Properties

Predicted Collision Cross Sections

PredictorAdduct TypeCCS Value (Å2)Reference
DeepCCS[M+H]+200.02730932474
DeepCCS[M-H]-197.66930932474
DeepCCS[M-2H]-232.00230932474
DeepCCS[M+Na]+207.0230932474
AllCCS[M+H]+193.932859911
AllCCS[M+H-H2O]+191.332859911
AllCCS[M+NH4]+196.332859911
AllCCS[M+Na]+196.932859911
AllCCS[M-H]-196.132859911
AllCCS[M+Na-2H]-196.532859911
AllCCS[M+HCOO]-197.232859911

Predicted Kovats Retention Indices

Underivatized

MetaboliteSMILESKovats RI ValueColumn TypeReference
LosmapimodCC1=C(C=C(C=C1F)C(=O)NC1CC1)C1=CC=C(C=N1)C(=O)NCC(C)(C)C4224.0Standard polar33892256
LosmapimodCC1=C(C=C(C=C1F)C(=O)NC1CC1)C1=CC=C(C=N1)C(=O)NCC(C)(C)C3335.2Standard non polar33892256
LosmapimodCC1=C(C=C(C=C1F)C(=O)NC1CC1)C1=CC=C(C=N1)C(=O)NCC(C)(C)C3395.4Semi standard non polar33892256

Derivatized

Derivative Name / StructureSMILESKovats RI ValueColumn TypeReference
Losmapimod,1TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13166.5Semi standard non polar33892256
Losmapimod,1TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13192.1Standard non polar33892256
Losmapimod,1TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13701.5Standard polar33892256
Losmapimod,1TMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13158.9Semi standard non polar33892256
Losmapimod,1TMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13099.5Standard non polar33892256
Losmapimod,1TMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13561.5Standard polar33892256
Losmapimod,2TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13037.6Semi standard non polar33892256
Losmapimod,2TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13168.9Standard non polar33892256
Losmapimod,2TMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C)C=N13429.2Standard polar33892256
Losmapimod,1TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13422.5Semi standard non polar33892256
Losmapimod,1TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13394.2Standard non polar33892256
Losmapimod,1TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)NCC(C)(C)C)C=N13735.8Standard polar33892256
Losmapimod,1TBDMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13409.6Semi standard non polar33892256
Losmapimod,1TBDMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13306.0Standard non polar33892256
Losmapimod,1TBDMS,isomer #2CC1=C(F)C=C(C(=O)NC2CC2)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13630.9Standard polar33892256
Losmapimod,2TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13501.7Semi standard non polar33892256
Losmapimod,2TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13584.5Standard non polar33892256
Losmapimod,2TBDMS,isomer #1CC1=C(F)C=C(C(=O)N(C2CC2)[Si](C)(C)C(C)(C)C)C=C1C1=CC=C(C(=O)N(CC(C)(C)C)[Si](C)(C)C(C)(C)C)C=N13576.3Standard polar33892256
Spectra

GC-MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted GC-MSPredicted GC-MS Spectrum - Losmapimod GC-MS (Non-derivatized) - 70eV, Positivesplash10-002f-7097000000-68d103fb466805f148302021-09-23Wishart LabView Spectrum
Predicted GC-MSPredicted GC-MS Spectrum - Losmapimod GC-MS (Non-derivatized) - 70eV, PositiveNot Available2021-10-12Wishart LabView Spectrum

MS/MS Spectra

Spectrum TypeDescriptionSplash KeyDeposition DateSourceView
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 10V, Positive-QTOFsplash10-001i-6019000000-4cf4a70c693798233aa42017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 20V, Positive-QTOFsplash10-000l-9054000000-7c0b9a869c1771e8de432017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 40V, Positive-QTOFsplash10-03di-9170000000-35036dfc63c6b35cca1f2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 10V, Negative-QTOFsplash10-001i-0009000000-d9bf93d5f3d18dea80e62017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 20V, Negative-QTOFsplash10-001i-3339000000-b70912b192b36b9f706f2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 40V, Negative-QTOFsplash10-01rl-9330000000-51513a16ae7f0c370f3b2017-07-26Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 10V, Positive-QTOFsplash10-001i-0009000000-7d7e179b280b62ddf2082021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 20V, Positive-QTOFsplash10-001i-2019000000-6737ed83b0812e94591a2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 40V, Positive-QTOFsplash10-01ox-1191000000-9dfd53d50dab0d2f2d2f2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 10V, Negative-QTOFsplash10-001i-0009000000-48c65ae05cb08bc2fd9d2021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 20V, Negative-QTOFsplash10-001i-2039000000-1f0a10f8c1e6959a27842021-10-12Wishart LabView Spectrum
Predicted LC-MS/MSPredicted LC-MS/MS Spectrum - Losmapimod 40V, Negative-QTOFsplash10-0006-8193000000-cdebde1322690dbd3b342021-10-12Wishart LabView Spectrum
Biological Properties
Cellular LocationsNot Available
Biospecimen Locations
  • Blood
Tissue LocationsNot Available
Pathways
Normal Concentrations
BiospecimenStatusValueAgeSexConditionReferenceDetails
BloodDetected but not QuantifiedNot QuantifiedNot SpecifiedNot SpecifiedNormal details
Abnormal Concentrations
Not Available
Associated Disorders and Diseases
Disease ReferencesNone
Associated OMIM IDsNone
DrugBank IDDB12270
Phenol Explorer Compound IDNot Available
FooDB IDNot Available
KNApSAcK IDNot Available
Chemspider IDNot Available
KEGG Compound IDNot Available
BioCyc IDNot Available
BiGG IDNot Available
Wikipedia LinkLosmapimod
METLIN IDNot Available
PubChem Compound11552706
PDB IDNot Available
ChEBI IDNot Available
Food Biomarker OntologyNot Available
VMH IDNot Available
MarkerDB IDNot Available
Good Scents IDNot Available
References
Synthesis ReferenceNot Available
Material Safety Data Sheet (MSDS)Not Available
General References
  1. Barupal DK, Fiehn O: Generating the Blood Exposome Database Using a Comprehensive Text Mining and Database Fusion Approach. Environ Health Perspect. 2019 Sep;127(9):97008. doi: 10.1289/EHP4713. Epub 2019 Sep 26. [PubMed:31557052 ]