GSK-189,254

GSK-189,254
Identifiers

IUPAC name 6-[(3-cyclobutyl-1,2,4,5-tetrahydro-3-benzazepin-7-yl)oxy]-N-methylpyridine-3-carboxamide
CAS Number	720690-73-3^N
PubChem (CID)	9798547
ChemSpider	7974313^N
UNII	5T4TX6CO53^N
ChEMBL	CHEMBL517140^N
Chemical and physical data
Formula	C₂₁H₂₅N₃O₂
Molar mass	351.441 g/mol
3D model (Jmol)	Interactive image
SMILES c4cc1CCN(C3CCC3)CCc1cc4Oc(cc2)ncc2C(=O)NC
InChI InChI=1S/C21H25N3O2/c1-22-21(25)17-6-8-20(23-14-17)26-19-7-5-15-9-11-24(18-3-2-4-18)12-10-16(15)13-19/h5-8,13-14,18H,2-4,9-12H2,1H3,(H,22,25)^N Key:WROHEWWOCPRMIA-UHFFFAOYSA-N^N
^NY (what is this?) (verify)

GSK-189,254 is a potent and selective H₃ histamine receptor inverse agonist developed by GlaxoSmithKline. It has subnanomolar affinity for the H₃ receptor (K_i = 0.2nM) and selectivity of over 10,000x for H₃ over other histamine receptor subtypes.^[1] Animal studies have shown it to possess not only stimulant and nootropic effects,^[2] but also analgesic action suggesting a role for H₃ receptors in pain processing in the spinal cord.^[3] GSK-189,254 and several other related drugs are currently being investigated as a treatment for Alzheimer's disease and other forms of dementia,^[4] as well as possible use in the treatment of conditions such as narcolepsy,^[5] or neuropathic pain which do not respond well to conventional analgesic drugs.^[6]

References

↑ Medhurst AD, Atkins AR, Beresford IJ, Brackenborough K, Briggs MA, Calver AR, Cilia J, Cluderay JE, Crook B, Davis JB, Davis RK, Davis RP, Dawson LA, Foley AG, Gartlon J, Gonzalez MI, Heslop T, Hirst WD, Jennings C, Jones DN, Lacroix LP, Martyn A, Ociepka S, Ray A, Regan CM, Roberts JC, Schogger J, Southam E, Stean TO, Trail BK, Upton N, Wadsworth G, Wald JA, White T, Witherington J, Woolley ML, Worby A, Wilson DM. GSK189254, a novel H3 receptor antagonist that binds to histamine H3 receptors in Alzheimer's disease brain and improves cognitive performance in preclinical models. Journal of Pharmacology and Experimental Therapeutics. 2007 Jun;321(3):1032-45. PMID 17327487
↑ Le S, Gruner JA, Mathiasen JR, Marino MJ, Schaffhauser H. Correlation between ex vivo receptor occupancy and wake-promoting activity of selective H3 receptor antagonists. Journal of Pharmacology and Experimental Therapeutics. 2008 Jun;325(3):902-9. doi:10.1124/jpet.107.135343 PMID 18305012
↑ Medhurst SJ, Collins SD, Billinton A, Bingham S, Dalziel RG, Brass A, Roberts JC, Medhurst AD, Chessell IP. Novel histamine H3 receptor antagonists GSK189254 and GSK334429 are efficacious in surgically-induced and virally-induced rat models of neuropathic pain. Pain. 2008 Aug 15;138(1):61-9. doi:10.1016/j.pain.2007.11.006 PMID 18164820
↑ Esbenshade TA, Browman KE, Bitner RS, Strakhova M, Cowart MD, Brioni JD. The histamine H3 receptor: an attractive target for the treatment of cognitive disorders. British Journal of Pharmacology. 2008 Jul;154(6):1166-81. doi:10.1038/bjp.2008.147 PMID 18469850
↑ Guo RX, Anaclet C, Roberts JC, Parmentier R, Zhang M, Guidon G, Buda C, Sastre JP, Feng JQ, Franco P, Brown SH, Upton N, Medhurst AD, Lin JS. Differential effects of acute and repeat dosing with the H3 antagonist GSK189254 on the sleep-wake cycle and narcoleptic episodes in Ox-/- mice. British Journal of Pharmacology. 2009 May;157(1):104-17. PMID 19413575
↑ Medhurst AD, Briggs MA, Bruton G, Calver AR, Chessell I, Crook B, Davis JB, Davis RP, Foley AG, Heslop T, Hirst WD, Medhurst SJ, Ociepka S, Ray A, Regan CM, Sargent B, Schogger J, Stean TO, Trail BK, Upton N, White T, Orlek B, Wilson DM. Structurally novel histamine H3 receptor antagonists GSK207040 and GSK334429 improve scopolamine-induced memory impairment and capsaicin-induced secondary allodynia in rats. Biochemical Pharmacology. 2007 Apr 15;73(8):1182-94. PMID 17276409

Histaminergics

Receptor
(ligands)

H₁	Agonists: 2-Pyridylethylamine Betahistine Histamine HTMT UR-AK49 Antagonists: First-generation: 4-Methyldiphenhydramine Alimemazine Antazoline Azatadine Bamipine Benzatropine (benztropine) Bepotastine Bromazine Brompheniramine Buclizine Captodiame Carbinoxamine Chlorcyclizine Chloropyramine Chlorothen Chlorphenamine Chlorphenoxamine Cinnarizine Clemastine Clobenzepam Clocinizine Cloperastine Cyclizine Cyproheptadine Dacemazine Decloxizine Deptropine Dexbrompheniramine Dexchlorpheniramine Dimenhydrinate Dimetindene Diphenhydramine Diphenylpyraline Doxylamine Embramine Etodroxizine Etybenzatropine (ethylbenztropine) Etymemazine Fenethazine Flunarizine Histapyrrodine Homochlorcyclizine Hydroxyethylpromethazine Hydroxyzine Isopromethazine Isothipendyl Meclozine Medrylamine Mepyramine (pyrilamine) Mequitazine Methafurylene Methapyrilene Methdilazine Moxastine Orphenadrine Oxatomide Oxomemazine Phenindamine Pheniramine Phenyltoloxamine Pimethixene Piperoxan Pipoxizine Promethazine Propiomazine Pyrrobutamine Talastine Thenalidine Thenyldiamine Thiazinamium Thonzylamine Tolpropamine Tripelennamine Triprolidine Second/third-generation: Acrivastine Alinastine Astemizole Azelastine Bamirastine Barmastine Bepiastine Bepotastine Bilastine Cabastinen Carebastine Cetirizine Clemastine Clemizole Clobenztropine Desloratadine Dorastine Ebastine Efletirizine Emedastine Epinastine Fexofenadine Flezelastine Ketotifen Latrepirdine Levocabastine Levocetirizine Linetastine Loratadine Mapinastine Mebhydrolin Mizolastine Moxastine Noberastine Octastine Olopatadine Perastine Pibaxizine Piclopastine Quifenadine (phencarol) Rocastine Rupatadine Setastine Sequifenadine (bicarphen) Talastine Temelastine Terfenadine Vapitadine Zepastine Non-generational: Atypical antipsychotics (e.g., aripiprazole, asenapine, clozapine, iloperidone, olanzapine, paliperidone, quetiapine, risperidone, ziprasidone, zotepine) Tetracyclic antidepressants (e.g., amoxapine, loxapine, maprotiline, mianserin, mirtazapine, oxaprotiline) Tricyclic antidepressants (e.g., amitriptyline, butriptyline, clomipramine, desipramine, dosulepin (dothiepin), doxepin, imipramine, iprindole, lofepramine, nortriptyline, protriptyline, trimipramine) Typical antipsychotics (e.g., chlorpromazine, flupenthixol, fluphenazine, loxapine, perphenazine, prochlorperazine, thioridazine, thiothixene) Unknown/unsorted: Belarizine Elbanizine Flotrenizine Napactadine Tagorizine Trelnarizine Trenizine

H₂	Agonists: Amthamine Betazole Dimaprit Histamine HTMT Impromidine UR-AK49 Antagonists: Bisfentidine Burimamide Cimetidine Dalcotidine Donetidine Ebrotidine Etintidine Famotidine Isolamtidine Lafutidine Lamtidine Lavoltidine (loxtidine) Lupitidine Metiamide Mifentidine Niperotidine Nizatidine Osutidine Oxmetidine Pibutidine Quisultazine (quisultidine) Ramixotidine Ranitidine Roxatidine Sufotidine Tiotidine Tuvatidine Venritidine Xaltidine Zolantidine

H₃	Agonists: α-Methylhistamine Cipralisant Histamine Imetit Immepip Immethridine Methimepip Proxyfan Antagonists: A-349,821 A-423,579 ABT-239 ABT-652 AZD5213 Betahistine Burimamide Ciproxifan Clobenpropit Conessine Enerisant GSK-189,254 Impentamine Iodophenpropit Irdabisant JNJ-5207852 MK-0249 NNC 38-1049 PF-03654746 Pitolisant SCH-79687 Thioperamide VUF-5681

H₄	Agonists: 4-Methylhistamine α-Methylhistamine Histamine OUP-16 VUF-8430 Antagonists: JNJ-7777120 Mianserin Thioperamide Toreforant VUF-6002

Transporter
(inhibitors)

VMATs

TAAR1 inactive	Amiodarone APP AZIK Bietaserpine Deserpidine Dihydrotetrabenazine Efavirenz GBR-12935 GZ-793A Ibogaine Ketanserin Lobeline Methoxytetrabenazine Reserpine Rose bengal SD-809 Tetrabenazine Valbenazine Vanoxerine (GBR-12909)

TAAR1 active	Amphetamine Methamphetamine MDMA Phenethylamine

Enzyme
(inhibitors)

HDC	Catechin Meciadanol Naringenin Tritoqualine

HNMT	Amodiaquine Diphenhydramine Harmaline Metoprine Quinacrine SKF-91,488 Tacrine

DAO	Pimagedine (aminoguanidine)

Others

Precursors	L -Histidine

Cofactors	Vitamin B₆

Nootropics

Ampakines	CX-516 CX-546 CX-614 Farampator (CX-691) CX-717 IDRA-21 LY-404,187 LY-503,430 Nooglutyl Org 26576 PEPA S-18986

Cholinergics	mAChR agonists: 77-LH-28-1 ADX-47273 Alvameline Arecoline Cevimeline CI-1017 Milameline Sabcomeline Tazomeline Xanomeline nAChR agonists: AR-R17779 Bradanicline Cotinine GTS-21 Ispronicline Nicotine PHA-543,613 PNU-282,987 Pozanicline Rivanicline SIB-1553A SSR-180,711 TC-1827 WAY-317,538 AChE inhibitors: Celastrus paniculatus Cymserine Donepezil Galantamine Huperzine A (Huperzia Serrata) Ladostigil Metrifonate Physostigmine Rivastigmine Tacrine Others: Alpha-GPC Choline Dimethylethanolamine Citicoline

Racetams	Aniracetam Brivaracetam Coluracetam Etiracetam Fasoracetam Levetiracetam Nebracetam Nefiracetam Oxiracetam Phenylpiracetam Piracetam Pramiracetam Rolziracetam Seletracetam

Nutrients	Acetylcarnitine Choline Omega-3 fatty acids Magnesium threonate Phosphatidylserine Pyritinol Sulbutiamine Thiamine

Others	Aceglutamide Adafenoxate Bacopa monnieri BAY 73-6691 Bifemelane Bilobalide (Ginkgo biloba) C16 Carbenoxolone Centella asiatica Cinnarizine Ciproxifan Clitoria ternatea Cyprodenate Dihexa Edaravone Eleutherococcus senticosus Ergoloid Ensaculin Emoxypine Fipexide Ginseng Guarana Idebenone Indeloxazine ISRIB Leteprinim Linopirdine Meclofenoxate (centrophenoxine) Methylene blue Nizofenone Noopept NSI-189 P7C3 Pirisudanol Pitolisant PRL-8-53 Razobazam Rubidium S-17092 Semax Shilajit Suritozole Taltirelin Teniloxazine Tianeptine Tricyanoaminopropene Uncaria tomentosa Vincamine Vinpocetine

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