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Title: Ly-404,187  
Author: World Heritage Encyclopedia
Language: English
Subject: PEPA (drug), IDRA-21, Farampator, S-18986, LY-503,430
Collection: Ampa Receptor Agonists, Ampakines, Eli Lilly and Company, Nitriles, Sulfonamides
Publisher: World Heritage Encyclopedia


Systematic (IUPAC) name
Clinical data
Legal status
  • Investigational New Medicine
CAS number  YesY
ATC code None
ChemSpider  N
Synonyms LY-404,187; N-2-[4-(4-cyanophenyl)phenyl]propyl-2-propanesulfonamide
Chemical data
Formula C19H22N2O2S 
Mol. mass 342.45 g/mol

LY-404,187 (or LY404187) is an ampakine (or "AMPA receptor potentiator") developed by Eli Lilly and Company.[1] It is a member of the biarylpropylsulfonamide class of ampakines.[2]

LY-404,187 has been demonstrated to enhance cognitive function in animal studies, and has also shown effects suggesting antidepressant action as well as having possible application in the treatment of schizophrenia, Parkinson's disease and ADHD. These effects appear to be mediated through multiple mechanisms of action secondary to AMPA receptor potentiation, with a prominent effect seen in research being increased levels of BDNF in the brain.[3] It may therefore be continued on to human trials, although Eli Lilly has developed a whole family of biarylpropylsulfonamide derivatives and it is unclear at this stage which compound is most likely to be selected for further development.[4][5]


  1. ^ Jones N, O'Neill MJ, Tricklebank M, Libri V, Williams SC (2005). "Examining the Neural Targets of the AMPA Receptor Potentiator LY404187 in the Rat Brain Using Pharmacological Magnetic Resonance Imaging". Psychopharmacology 180 (4): 743–751.  
  2. ^ Ryder JW, Falcone JF, Manro JR, Svensson KA, Merchant KM (2006). "Pharmacological Characterization of cGMP Regulation by the Biarylpropylsulfonamide Class of Positive, Allosteric Modulators of α-Amino-3-hydroxy-5-methyl-4-isoxazolepropionic Acid Receptors". Journal of Pharmacology and Experimental Therapeutics 319 (1): 293–298.  
  3. ^ Quirk JC, Nisenbaum ES (2002). "LY404187: A Novel Positive Allosteric Modulator of AMPA Receptors" (pdf). CNS Drug Reviews 8 (3): 255–282.  
  4. ^ O'Neill MJ, Bleakman D, Zimmerman DM, Nisenbaum ES (2004). "AMPA Receptor Potentiators for the Treatment of CNS Disorders". Current Drug Targets. CNS and Neurological Disorders 3 (3): 181–194.  
  5. ^ O'Neill MJ, Witkin JM (2007). "AMPA Receptor Potentiators: Application for Depression and Parkinson's Disease". Current Drug Targets 8 (5): 603–620.  

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