MRK-016 Names Preferred IUPAC name 3-tert -Butyl-7-(5-methyl-1,2-oxazol-3-yl)-2-[(1H -1,2,4-triazol-5-yl)methoxy]pyrazolo[1,5-d ][1,2,4]triazine
Identifiers ChemSpider UNII InChI=1S/C17H20N8O2/c1-10-6-11(23-27-10)15-21-19-7-12-14(17(2,3)4)16(22-25(12)15)26-8-13-18-9-20-24(13)5/h6-7,9H,8H2,1-5H3
Key: QYSYOGCIDRANAR-UHFFFAOYSA-N
CN1N=CN=C1COC1=NN2C(C=NN=C2C2=NOC(C)=C2)=C1C(C)(C)C
Properties C 17 H 20 N 8 O 2 Molar mass 368.401 g·mol−1 Except where otherwise noted, data are given for materials in their
standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
MRK-016 is a selective α5 subunit-containing GABAA negative allosteric modulator ,[ 1] that has nootropic properties. It has been found to produce rapid, ketamine -like antidepressant effects in animal models of depression .[ 2]
See also
References ^ Atack JR, Maubach KA, Wafford KA, O'Connor D, Rodrigues AD, Evans DC, et al. (November 2009). "In vitro and in vivo properties of 3-tert-butyl-7-(5-methylisoxazol-3-yl)-2-(1-methyl-1H-1,2,4-triazol-5-ylmethoxy)-pyrazolo[1,5-d]-[1,2,4]triazine (MRK-016), a GABAA receptor alpha5 subtype-selective inverse agonist". The Journal of Pharmacology and Experimental Therapeutics . 331 (2): 470– 84. doi :10.1124/jpet.109.157636 . PMID 19704033 . S2CID 688293 . ^ Fischell J, Van Dyke AM, Kvarta MD, LeGates TA, Thompson SM (October 2015). "Rapid Antidepressant Action and Restoration of Excitatory Synaptic Strength After Chronic Stress by Negative Modulators of Alpha5-Containing GABAA Receptors" . Neuropsychopharmacology . 40 (11): 2499– 509. doi :10.1038/npp.2015.112 . PMC 4569955 . PMID 25900119 .
Ionotropic
GABAA Tooltip γ-Aminobutyric acid A receptor Positive modulators (abridged; see here for a full list): α-EMTBL Alcohols (e.g., drinking alcohol , 2M2B ) Anabolic steroids Avermectins (e.g., ivermectin ) Barbiturates (e.g., phenobarbital ) Benzodiazepines (e.g., diazepam ) Bromide compounds (e.g., potassium bromide ) Carbamates (e.g., meprobamate ) Carbamazepine Chloralose Chlormezanone Clomethiazole Dihydroergolines (e.g., ergoloid (dihydroergotoxine) ) Etazepine Etifoxine Fenamates (e.g., mefenamic acid ) Flavonoids (e.g., apigenin , hispidulin ) Fluoxetine Flupirtine Imidazoles (e.g., etomidate ) Kava constituents (e.g., kavain ) Lanthanum Loreclezole Monastrol Neuroactive steroids (e.g., allopregnanolone , cholesterol , THDOC ) Niacin Niacinamide Nonbenzodiazepines (e.g., β-carbolines (e.g., abecarnil ), cyclopyrrolones (e.g., zopiclone ), imidazopyridines (e.g., zolpidem ), pyrazolopyrimidines (e.g., zaleplon )) Norfluoxetine Petrichloral Phenols (e.g., propofol ) Phenytoin Piperidinediones (e.g., glutethimide ) Propanidid Pyrazolopyridines (e.g., etazolate ) Quinazolinones (e.g., methaqualone ) Retigabine (ezogabine) ROD-188 Skullcap constituents (e.g., baicalin ) Stiripentol Sulfonylalkanes (e.g., sulfonmethane (sulfonal) ) Topiramate Valerian constituents (e.g., valerenic acid ) Volatiles /gases (e.g., chloral hydrate , chloroform , diethyl ether , paraldehyde , sevoflurane ) Negative modulators: 1,3M1B 3M2B 11-Ketoprogesterone 17-Phenylandrostenol α3IA α5IA (LS-193,268) β-CCB β-CCE β-CCM β-CCP β-EMGBL Anabolic steroids Amiloride Anisatin β-Lactams (e.g., penicillins , cephalosporins , carbapenems ) Basmisanil Bemegride Bicyclic phosphates (TBPS , TBPO , IPTBO ) BIDN Bilobalide Bupropion CHEB Chlorophenylsilatrane Cicutoxin Cloflubicyne Cyclothiazide DHEA DHEA-S Dieldrin (+)-DMBB DMCM DMPC EBOB Etbicyphat FG-7142 (ZK-31906) Fiproles (e.g., fipronil ) Flavonoids (e.g., amentoflavone , oroxylin A ) Flumazenil Fluoroquinolones (e.g., ciprofloxacin ) Flurothyl Furosemide Golexanolone Iomazenil (123 I) IPTBO Isopregnanolone (sepranolone) L-655,708 Laudanosine Lindane MaxiPost Morphine Morphine-3-glucuronide Naloxone Naltrexone Nicardipine Nonsteroidal antiandrogens (e.g., apalutamide , bicalutamide , enzalutamide , flutamide , nilutamide ) Oenanthotoxin Pentylenetetrazol (pentetrazol) Phenylsilatrane Picrotoxin (i.e., picrotin , picrotoxinin and dihydropicrotoxinin ) Pregnenolone sulfate Propybicyphat PWZ-029 Radequinil Ro 15-4513 Ro 19-4603 RO4882224 RO4938581 Sarmazenil SCS Suritozole TB-21007 TBOB TBPS TCS-1105 Terbequinil TETS Thujone U-93631 Zinc ZK-93426 GABAA -ρ Tooltip γ-Aminobutyric acid A-rho receptor
Metabotropic
GABAB Tooltip γ-Aminobutyric acid B receptor Negative modulators: Compound 14
See also Receptor/signaling modulators GABAA receptor positive modulators GABA metabolism/transport modulators