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eptapirone

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eptapirone

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Eptapirone (F-11,440) is a very potent and highly selective 5-HT1A receptor full agonist of the azapirone family. Its affinity for the 5-HT1A receptor was reported to be 4.8 nM (Ki) (or 8.33 (pKi)), and its intrinsic activity approximately equal to that of serotonin (i.e., 100%).

Chemical data

Formula
C16H23N7O2
Molecular weight
345.4 g/mol
IUPAC name
4-methyl-2-[4-(4-pyrimidin-2-ylpiperazin-1-yl)butyl]-1,2,4-triazine-3,5-dione
SMILES
CN1C(=O)C=NN(C1=O)CCCCN2CCN(CC2)C3=NC=CC=N3
InChIKey
NMYAHEULKSYAPP-UHFFFAOYSA-N
XLogP
0.4
Polar surface area
85.2 Ų
H-bond donors
0
H-bond acceptors
7
Formal charge
0

via PubChem

Drug data · ChEMBL

Max clinical phase
Phase 2
Molecule type
Small molecule

via ChEMBL · EBI

Wikidata facts

Has part
carbon
Mass
345.191
Show 2 more facts
chemical formula
C₁₆H₂₃N₇O₂
canonical SMILES
CN1C(=O)C=NN(C1=O)CCCCN2CCN(CC2)C3=NC=CC=N3
Sources (1)

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~3 min read

Encyclopedic overview

4 sections
Contents
  • Animal studies
  • Human studies
  • See also
  • References

Eptapirone (F-11,440) is a very potent and highly selective 5-HT1A receptor full agonist of the azapirone family. Its affinity for the 5-HT1A receptor was reported to be 4.8 nM (Ki) (or 8.33 (pKi)), and its intrinsic activity approximately equal to that of serotonin (i.e., 100%).

Eptapirone and related high-efficacy 5-HT1A full and super agonists such as befiradol and F-15,599 were developed under the hypothesis that the maximum exploitable therapeutic benefits of 5-HT1A receptor agonists might not be able to be seen without the drugs employed possessing sufficiently high intrinsic activity at the receptor. As 5-HT1A receptor agonism, based on animal and other research, looked extremely promising for the treatment of depression from a theoretical perspective, this idea was developed as a potential explanation for the relatively modest clinical effectiveness seen with already available 5-HT1A receptor agonists like buspirone and tandospirone, which act merely as weak-to-moderate partial agonists of the receptor.

Excerpted from Wikipedia’s “eptapirone” article, available under the CC BY-SA 4.0 licence.

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