From Wikipedia, the free encyclopedia
  • (S)-1-(2-(4-(6-fluoro-1H-indol-3-yl)-3,6-dihydropyridin-1(2H)-yl)ethyl)isochromane-6-carboxamide
CAS Number
PubChem CID
Chemical and physical data
Molar mass419.500 g·mol−1
3D model (JSmol)
  • C1CN(CC=C1C2=CNC3=C2C=CC(=C3)F)CCC4C5=C(CCO4)C=C(C=C5)C(=O)N
  • InChI=1S/C25H26FN3O2/c26-19-2-4-21-22(15-28-23(21)14-19)16-5-9-29(10-6-16)11-7-24-20-3-1-18(25(27)30)13-17(20)8-12-31-24/h1-5,13-15,24,28H,6-12H2,(H2,27,30)/t24-/m0/s1

LY-456220 is a potent and selective serotonin 5-HT1D receptor antagonist which has been used in research to study the function of presynaptic 5-HT1D autoreceptors. LY-456220 lacks significant affinity for the 5-HT1B, α1 adrenergic, and dopamine D2 receptors.[1][2]


  1. ^ Pullar IA, Boot JR, Broadmore RJ, Eyre TA, Cooper J, Sanger GJ, et al. (June 2004). "The role of the 5-HT1D receptor as a presynaptic autoreceptor in the guinea pig". European Journal of Pharmacology. 493 (1–3): 85–93. doi:10.1016/j.ejphar.2004.04.029. PMID 15189767.
  2. ^ Timms GH, Boot JR, Broadmore RJ, Carney SL, Cooper J, Findlay JD, et al. (May 2004). "SAR development of a selective 5-HT1D antagonist/serotonin reuptake inhibitor lead using rapid parallel synthesis". Bioorganic & Medicinal Chemistry Letters. 14 (10): 2469–72. doi:10.1016/j.bmcl.2004.03.003. PMID 15109634.