Ergotamine

drug
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Also known as ErgotaminaNSC-95090Diergotamine

Summary

Ergotamine (CHEMBL442) is an approved small-molecule non-narcotic analgesic (ATC N02CA72) targeting HTR5A, HTR6, and HTR7; indicated across 2 conditions including migraine disorder and orthostatic hypotension.

At a glance

  • Status: Approved (max clinical phase 4)
  • Modality: Small molecule
  • ATC class: N02CA72 (+2 more)
  • Targets: 9 (HTR5A, HTR6, HTR7…)
  • Indications: 2 conditions
  • Clinical trials: 1
  • Chemistry: 581.7 Da · C33H35N5O5

Identifiers

Drug identity and classification

FieldValue
ChEMBL IDCHEMBL442
NameErgotamine
TypeSmall molecule
Max phase4
FDA approvedyes
PubChem CID8223
ChEBICHEBI:64318
ATCN02CA72, N02CA02, N02CA52
Molecular formulaC33H35N5O5
Molecular weight581.7
InChIKeyXCGSFFUVFURLIX-VFGNJEKYSA-N

SMILES: C[C@@]1(C(=O)N2[C@H](C(=O)N3CCC[C@H]3[C@@]2(O1)O)CC4=CC=CC=C4)NC(=O)[C@H]5CN([C@@H]6CC7=CNC8=CC=CC(=C78)C6=C5)C

IUPAC name: (6aR,9R)-N-[(1S,2S,4R,7S)-7-benzyl-2-hydroxy-4-methyl-5,8-dioxo-3-oxa-6,9-diazatricyclo[7.3.0.02,6]dodecan-4-yl]-7-methyl-6,6a,8,9-tetrahydro-4H-indolo[4,3-fg]quinoline-9-carboxamide

ChEBI definition: A peptide ergot alkaloid that is dihydroergotamine in which a double bond replaces the single bond between positions 9 and 10.

Pharmacological roles (ChEBI): non-narcotic analgesic, vasoconstrictor agent, serotonergic agonist, α-adrenergic agonist, mycotoxin, oxytocic.

Also known as: Ergotamina, Ergotamine, NSC-95090, ergotamine, Diergotamine, ERGOTAMINE

Parent form; salt/anhydrous children: CHEMBL2448612

Patent coverage: 5,418 distinct patent families (19,697 SureChEMBL compound mentions), from 2 matched compound structure(s). One matched structure accounts for 19,671 (100%) of the total. Mentions count patents naming the compound (not distinct inventions), so promiscuous / reference molecules inflate the mention figure — families are the dedup metric.

Targets

Targets

Primary targets (GtoPdb curated mechanism): the Cancer dependency column is the DepMap CRISPR fitness signal (% of screened cell lines dependent on the target).

GeneTargetActionpAffinityCancer dependencyUniProt
HTR5A5-HT5A receptorAntagonist8.70%P47898
HTR65-HT6 receptorFull agonist8.60.2%P50406
HTR75-HT7 receptorAntagonist7.30.8%P34969
HTR1D5-HT1D receptorAgonist9.10%P28221
HTR1E5-ht1e receptorFull agonist6.30%P28566
HTR1F5-HT1F receptorFull agonist6.80.1%P30939
HTR2A5-HT2A receptorPartial agonist90%P28223
HTR2B5-HT2B receptorPartial agonist8.90.4%P41595
HTR2C5-HT2C receptorPartial agonist8.70%P28335

Broader ChEMBL bioactivity targets: 35 (assay-derived). Sample: 5-hydroxytryptamine receptor 2B, Thromboxane-A synthase, Tyrosine-protein kinase Fyn, Alpha-2A adrenergic receptor, 5-hydroxytryptamine receptor 1B, Alpha-2C adrenergic receptor, Alpha-2B adrenergic receptor, 5-hydroxytryptamine receptor 1D, D(1A) dopamine receptor, Beta-2 adrenergic receptor.

Bioactivity

ChEMBL activities: 66 potent at pChembl ≥ 5 of 74 total. Top 30 by potency (10 = 0.1 nM, 6 = 1 µM):

TargetpChemblTypeValueUnitActivity ID
P2856410.04Ki0.09nMCHEMBL_ACT_7673525
P285649.7IC500.2nMCHEMBL_ACT_7673524
P193279.35Ki0.44nMCHEMBL_ACT_7673523
P193279.11IC500.77nMCHEMBL_ACT_7673522
HTR1D9.1Ki0.8nMCHEMBL_ACT_433483
ADRA2A9.1Ki0.8nMCHEMBL_ACT_7671330
HTR69.02Ki0.95nMCHEMBL_ACT_7673537
DRD28.84Ki1.43nMCHEMBL_ACT_7671400
DRD38.83Ki1.46nMCHEMBL_ACT_7671402
ADRA2B8.76Ki1.75nMCHEMBL_ACT_7671332
ADRA2C8.74Ki1.81nMCHEMBL_ACT_7671334
HTR2A8.73Ki1.85nMCHEMBL_ACT_7673527
HTR68.69IC502.04nMCHEMBL_ACT_7673536
HTR1B8.68Ki2.1nMCHEMBL_ACT_7844614
ADRA2A8.67IC502.12nMCHEMBL_ACT_7671329
HTR1D8.66Ki2.2nMCHEMBL_ACT_13876538
HTR2B8.66Ki2.2nMCHEMBL_ACT_7673529
HTR1D8.58Ki2.63nMCHEMBL_ACT_13876503
HTR1B8.52Ki3.02nMCHEMBL_ACT_13876504
HTR1B8.51Ki3.1nMCHEMBL_ACT_13876722
P431408.49Ki3.26nMCHEMBL_ACT_7669315
HTR2B8.46IC503.46nMCHEMBL_ACT_7673528
ADRA2B8.41IC503.84nMCHEMBL_ACT_7671331
DRD28.37IC504.3nMCHEMBL_ACT_7671399
DRD38.37IC504.31nMCHEMBL_ACT_7671401
HTR1D8.37Ki4.3nMCHEMBL_ACT_7844615
P158238.34Ki4.55nMCHEMBL_ACT_7669317
HTR1D8.22Ki6nMCHEMBL_ACT_6356098
HTR2A8.19IC506.49nMCHEMBL_ACT_7673526
HTR2A8.14EC507.3nMCHEMBL_ACT_25553096

Target pathways

Aggregated over 9 target gene(s): HTR5A, HTR6, HTR7, HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C.

Top Reactome pathways

11 total, by targets touching each:

PathwayTargetsGenes
Signal Transduction9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
Signaling by GPCR9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
Class A/1 (Rhodopsin-like receptors)9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
Amine ligand-binding receptors9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
GPCR downstream signalling9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
Serotonin receptors9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
GPCR ligand binding9HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
G alpha (i) signalling events4HTR1D, HTR1E, HTR1F, HTR5A
G alpha (q) signalling events3HTR2A, HTR2B, HTR2C
G alpha (s) signalling events2HTR6, HTR7
RHOBTB3 ATPase cycle1HTR7

Dominant GO biological processes

GO termTargets
G protein-coupled receptor signaling pathway9
G protein-coupled receptor signaling pathway, coupled to cyclic nucleotide second messenger9
chemical synaptic transmission9
signal transduction9
G protein-coupled serotonin receptor signaling pathway6
adenylate cyclase-activating G protein-coupled receptor signaling pathway4
adenylate cyclase-inhibiting serotonin receptor signaling pathway4
smooth muscle contraction3
vasoconstriction3
adenylate cyclase-inhibiting G protein-coupled receptor signaling pathway3
intracellular calcium ion homeostasis3
phospholipase C-activating serotonin receptor signaling pathway3
serotonin receptor signaling pathway3
positive regulation of phosphatidylinositol biosynthetic process3
release of sequestered calcium ion into cytosol3

Indications & clinical

Indications

2 indications (1 at ChEMBL trial phase 4). Phase below is the highest clinical-trial phase recorded for this drug against each disease — not the molecule’s overall approval status (that is in the Summary).

IndicationTrial phaseMONDOEFO
migraine disorder4MONDO:0005277MONDO:0005277
orthostatic hypotension1MONDO:0005469EFO:0005252

Clinical trials

Total trials: 1.

Phase distribution

PhaseTrials
PHASE11

Top trials by phase / activity

NCTPhaseStatusTitle
NCT00223691PHASE1COMPLETEDTreatment of Orthostatic Hypotension in Autonomic Failure

Clinical evidence (CIViC)

No CIViC predictive evidence (expected for non-precision-medicine drugs).

Pharmacology

Pharmacogenomics

No CPIC/DPWG dosing guideline or drug-level clinical/variant annotations in PharmGKB for this molecule.

Molecules sharing ≥1 of this drug’s curated primary targets, merged from two biobtree sources and ranked by shared-target count, then clinical phase: ChEMBL clinical-stage candidates (development phase ≥2) and PubChem drug-class bioactivity (approved / known drugs acting on the target). Deduplicated by drug name; the drug’s own salt forms are excluded. Note: for a drug with few primary targets a shared-target match can reflect off-target / promiscuous binding rather than the same therapeutic mechanism — the phase ordering surfaces bona-fide therapeutics first.

598 molecules share ≥1 primary target. Top 60 by shared-target count:

MoleculeSourceStatusShared targets
DIHYDROERGOTAMINEChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
IMIPRAMINEChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
RISPERIDONEChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
SEROTONINChEMBL + PubChemPhase 3 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
MEBUFOTENINChEMBLPhase 2HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
BREXPIPRAZOLEChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
CLOZAPINEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
CyproheptadineChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
OLANZAPINEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
SORAFENIBChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
SUMATRIPTANChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR5A, HTR7
LATREPIRDINEChEMBLPhase 3HTR1D, HTR1E, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
LYSERGIDEChEMBLPhase 2HTR1D, HTR1E, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
PSILOCINChEMBLPhase 2HTR1D, HTR1E, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
QUETIAPINEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR6, HTR7
TEGASERODChEMBL + PubChemPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
ARIPIPRAZOLEChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
AZELASTINEChEMBLPhase 4 (approved)HTR1D, HTR1E, HTR2A, HTR2B, HTR2C, HTR6, HTR7
CARIPRAZINEChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
CINACALCETChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
KETANSERINChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
NEFAZODONEChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
PENFLURIDOLChEMBLPhase 2HTR1D, HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
AMOXAPINEChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
CHLORPROMAZINEChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
DOXEPINChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
HALOPERIDOLChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
LasmiditanChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2B, HTR5A, HTR7
LOXAPINEChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
METHYLERGONOVINEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR1F, HTR2A, HTR2B, HTR2C, HTR6
RIZATRIPTANChEMBL + PubChemPhase 4 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR2C
ZIPRASIDONEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR2A, HTR2B, HTR2C, HTR6, HTR7
ASTEMIZOLEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
MIANSERINChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR6, HTR7
PROMAZINEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
YOHIMBINEChEMBL + PubChemPhase 3 (approved)HTR1D, HTR1E, HTR1F, HTR2A, HTR2B, HTR6
RITANSERINChEMBLPhase 2HTR1E, HTR2A, HTR2C, HTR5A, HTR6, HTR7
SPIPERONEChEMBLPhase 2HTR2A, HTR2B, HTR2C, HTR5A, HTR6, HTR7
ASENAPINEChEMBL + PubChemPhase 4 (approved)HTR1E, HTR2A, HTR2B, HTR2C, HTR6
DIPHENHYDRAMINEChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6
FluoxetineChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6
HYDROXYZINEChEMBL + PubChemPhase 4 (approved)HTR2A, HTR2B, HTR5A, HTR6, HTR7
PramipexoleChEMBL + PubChemPhase 4 (approved)HTR1E, HTR2A, HTR2B, HTR5A, HTR7
CARVEDILOLChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
FLUPHENAZINEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
IPRINDOLEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6
KETOTIFENChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
METHYSERGIDEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
OXYMETAZOLINEChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR6
SALMETEROLChEMBLPhase 4 (approved)HTR1D, HTR2A, HTR2B, HTR2C, HTR7
SUNITINIBChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR5A, HTR6
THIORIDAZINEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
THIOTHIXENEChEMBLPhase 4 (approved)HTR2A, HTR2B, HTR2C, HTR6, HTR7
CHLOROPHENYLPIPERAZINEChEMBLPhase 2HTR2A, HTR2B, HTR2C, HTR6, HTR7
FANANSERINChEMBLPhase 2HTR2A, HTR2C, HTR5A, HTR6, HTR7
GSK163090ChEMBLPhase 2HTR1D, HTR2A, HTR2B, HTR2C, HTR7
MESULERGINEChEMBLPhase 2HTR2A, HTR2B, HTR2C, HTR6, HTR7
METERGOLINEChEMBLPhase 2HTR2A, HTR2B, HTR2C, HTR6, HTR7
METITEPINEChEMBLPhase 2HTR2A, HTR2C, HTR5A, HTR6, HTR7
PRUVANSERINChEMBLPhase 2HTR1D, HTR2A, HTR2B, HTR2C, HTR7