QH-II-66

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QH-II-66
QH-II-66.svg
Qhii663d.png
Systematic (IUPAC) name
7-ethynyl-1-methyl-5-phenyl-1,3-dihydro-2H-1,4-benzodiazepin-2-one
Identifiers
CAS Number 183239-39-6 N
PubChem CID: 9838431
ChemSpider 8014151 YesY
ChEMBL CHEMBL174535 YesY
Chemical data
Formula C18H14N2O
Molecular mass 274.33
  • O=C1N(C)C2=C(C(C3=CC=CC=C3)=NC1)C=C(C=C2)C#C
  • InChI=1S/C18H14N2O/c1-3-13-9-10-16-15(11-13)18(14-7-5-4-6-8-14)19-12-17(21)20(16)2/h1,4-11H,12H2,2H3 YesY
  • Key:FESCSZDQOFYRDR-UHFFFAOYSA-N YesY
 NYesY (what is this?)  (verify)

QH-II-66[1] (QH-ii-066) is a sedative drug which is a benzodiazepine derivative.[2] It produces some of the same effects as other benzodiazepines, but is much more selective than most other drugs of this class and so produces somewhat less sedation and ataxia than other related drugs such as diazepam and triazolam, although it still retains anticonvulsant effects.[3]

QH-ii-066 is a highly subtype-selective GABAA agonist which was designed to bind selectively to the α5 subtype of GABAA receptors.[4]

The α5 subtype (and to a lesser extent the α1 subtype) of GABAA are two of the most important targets in the brain that produce the effects of alcohol,[5] and so one of the purposes for which QH-ii-066 was developed was to reproduce the GABAergic effects of alcohol separately from its other actions.[6]

QH-ii-066 replicates some of the effects of alcohol, such as sedation and ataxia, but does not increase appetite, as this effect seems to be produced by the α1 subtype of GABAA rather than α5.[7] It is also interesting to note that the inverse agonist Ro15-4513, which blocks the α4 subtype of GABAA, reverses the effects of alcohol, suggesting that this subtype is also important in producing the subjective effects of alcohol intoxication.[8]

See also

References

  1. US Patent Application 2006/3995 A1 Stereospecific anxiolytic and anticonvulsant agents with reduced muscle-relaxant, sedative-hypnotic and ataxic effects
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  3. James M. Cook, Qi Huang, Xiaohui He, Xioayan Li, Jianming Yu, Dongmei Han, Snjezana Lelas, John F. McElroy. US71191961
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