Pazinaclone

Pazinaclone (DN-2327) is a sedative and anxiolytic drug in the cyclopyrrolone family of drugs. Other cyclopyrrolone drugs include zopiclone and eszopiclone.

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Pazinaclone has a very similar pharmacological profile to the benzodiazepine family of drugs including sedative and anxiolytic properties, but with less amnestic effects,^[1] and at low doses it is a relatively selective anxiolytic, with sedative effects only appearing at higher doses.^[2]

Pazinaclone produces its sedative and anxiolytic effects by acting as a partial agonist at GABA_A benzodiazepine receptors, although pazinaclone is more subtype-selective than most benzodiazepines.^[3]

References

1. ^ Wada T, Fukuda N. Effect of a new anxiolytic, DN-2327, on learning and memory in rats. Pharmacology, Biochemistry and Behavior. 1992 Mar;41(3):573-9.
2. ^ Suzuki M, Uchiumi M, Murasaki M. A comparative study of the psychological effects of DN-2327, a partial benzodiazepine agonist, and alprazolam. Psychopharmacology (Berlin). 1995 Oct;121(4):442-50.
3. ^ Atack JR. The benzodiazepine binding site of GABA(A) receptors as a target for the development of novel anxiolytics. Expert Opinion on Investigational Drugs. 2005 May;14(5):601-18.