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ZK-93423: Wikis


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Systematic (IUPAC) name
ethyl 4-(methoxymethyl)-6-(phenylmethoxy) -9H-pyrido[5,4-b]indole-3-carboxylate
CAS number 83910-44-5
ATC code none
PubChem 121926
Chemical data
Formula C 23H22N2O4  
Mol. mass 390.431 g/mol
SMILES eMolecules & PubChem
Pharmacokinetic data
Bioavailability  ?
Metabolism  ?
Half life  ?
Excretion  ?
Therapeutic considerations
Pregnancy cat.  ?
Legal status legal
Routes  ?

ZK-93423 is an anxiolytic drug from the β-Carboline family, closely related to abecarnil.[1] It is a nonbenzodiazepine GABAA agonist which is not subtype selective and stimulates α1, α2, α3, and α5-subunit containing GABAA receptors equally.[2] It has anticonvulsant, muscle relaxant and appetite stimulating properties comparable to benzodiazepine drugs.[3][4][5][6] ZK-93423 has also been used as a base to develop new and improved beta-carboline derivatives and help map the binding site of the GABAA receptor.[7][8][9][10][11][12]


  1. ^ Zhang H, Larock RC (December 2002). "Synthesis of beta- and gamma-carbolines by the palladium-catalyzed iminoannulation of alkynes". The Journal of Organic Chemistry 67 (26): 9318–30. PMID 12492334.  
  2. ^ Stephens DN, Shearman GT, Kehr W (1984). "Discriminative stimulus properties of beta-carbolines characterized as agonists and inverse agonists at central benzodiazepine receptors". Psychopharmacology 83 (3): 233–9. PMID 6089245.  
  3. ^ Klockgether T, Pardowitz I, Schwarz M, Sontag KH, Turski L (October 1985). "Evaluation of the muscle relaxant properties of a novel beta-carboline, ZK 93423 in rats and cats". British Journal of Pharmacology 86 (2): 357–66. PMID 3931731.  
  4. ^ Cooper SJ (January 1986). "Hyperphagic and anorectic effects of beta-carbolines in a palatable food consumption test: comparisons with triazolam and quazepam". European Journal of Pharmacology 120 (3): 257–65. PMID 3753939.  
  5. ^ File SE, Baldwin HA (September 1987). "Effects of beta-carbolines in animal models of anxiety". Brain Research Bulletin 19 (3): 293–9. PMID 3315125.  
  6. ^ Löscher W, Hönack D, Hashem A (November 1987). "Anticonvulsant efficacy of clonazepam and the beta-carboline ZK 93423 during chronic treatment in amygdala-kindled rats". European Journal of Pharmacology 143 (3): 403–14. PMID 3691663.  
  7. ^ Dodd RH, Ouannès C, Potier MC, Prado de Carvalho L, Rossier J, Potier P (July 1987). "Synthesis of beta-carboline-benzodiazepine hybrid molecules: use of the known structural requirements for benzodiazepine and beta-carboline binding in designing a novel, high-affinity ligand for the benzodiazepine receptor". Journal of Medicinal Chemistry 30 (7): 1248–54. PMID 3037081.  
  8. ^ Hollinshead SP, Trudell ML, Skolnick P, Cook JM (March 1990). "Structural requirements for agonist actions at the benzodiazepine receptor: studies with analogues of 6-(benzyloxy)-4-(methoxymethyl)-beta-carboline-3-carboxylic acid ethyl ester". Journal of Medicinal Chemistry 33 (3): 1062–9. PMID 1968513.  
  9. ^ Diaz-Arauzo H, Evoniuk GE, Skolnick P, Cook JM (May 1991). "The agonist pharmacophore of the benzodiazepine receptor. Synthesis of a selective anticonvulsant/anxiolytic". Journal of Medicinal Chemistry 34 (5): 1754–6. PMID 1674542.  
  10. ^ Sharma RC, Ojha TN, Tiwari S, Singh P (1992). "Quantitative structure-activity relationship study of some benzodiazepine-receptor ligands having inverse agonist/antagonist and agonist actions". Drug Design and Discovery 9 (2): 135–43. PMID 1338366.  
  11. ^ Cox ED, Diaz-Arauzo H, Huang Q, Reddy MS, Ma C, Harris B, McKernan R, Skolnick P, Cook JM (July 1998). "Synthesis and evaluation of analogues of the partial agonist 6-(propyloxy)-4-(methoxymethyl)-beta-carboline-3-carboxylic acid ethyl ester (6-PBC) and the full agonist 6-(benzyloxy)-4-(methoxymethyl)-beta-carboline-3-carboxylic acid ethyl ester (Zk 93423) at wild type and recombinant GABAA receptors". Journal of Medicinal Chemistry 41 (14): 2537–52. doi:10.1021/jm970460b. PMID 9651158.  
  12. ^ Ferretti V, Gilli P, Borea PA (August 2004). "Structural features controlling the binding of beta-carbolines to the benzodiazepine receptor". Acta Crystallographica. Section B, Structural Science 60 (Pt 4): 481–9. doi:10.1107/S0108768104013564. PMID 15258407.  


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