Ocinaplon
This article will address Ocinaplon, a current topic that has aroused the interest of different sectors of society. Ocinaplon has gained relevance in recent times and has generated a debate around its implications and repercussions. Through an exhaustive analysis, we will seek to offer a complete and objective view of Ocinaplon, in order to provide readers with a deeper understanding of this topic. In addition, different perspectives and approaches will be examined that will allow Ocinaplon to be approached from different angles, thus enriching the knowledge and debate around this topic.
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| Formula | C17H11N5O |
| Molar mass | 301.309 g·mol−1 |
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Ocinaplon is an anxiolytic drug in the pyrazolopyrimidine family of drugs. Other pyrazolopyrimidine drugs include zaleplon and indiplon.
Ocinaplon has a similar pharmacological profile to the benzodiazepine family of drugs, but with mainly anxiolytic properties and relatively little sedative or amnestic effect.
Medical uses
A 2019 review found tentative evidence of benefit in anxiety.
Mechanism of action
The mechanism of action by which ocinaplon produces its anxiolytic effects is by modulating GABAA receptors, although ocinaplon is more subtype-selective than most benzodiazepines.
Availability
Development of ocinaplon is discontinued due to liver complications that occurred in one of the Phase III subjects.
Synthesis
Condensation of 4-Acetylpyridine with N,N-Dimethylformamide dimethyl acetal (DMFDMA) gives the "enamide" (3). This is then condensed with (3-Amino-1H-pyrazol-4-yl)(2-pyridinyl)methanone (4) (96219-90-8). This is the same intermediate as was used in the synthesis of zaleplon in which the nitrile is replaced by a 2-acetylpyridil moiety. This affords the anxiolytic agent ocinaplon (5).
References
- ^ Lippa A, Czobor P, Stark J, Beer B, Kostakis E, Gravielle M, et al. (May 2005). "Selective anxiolysis produced by ocinaplon, a GABA(A) receptor modulator". Proceedings of the National Academy of Sciences of the United States of America. 102 (20): 7380–5. Bibcode:2005PNAS..102.7380L. doi:10.1073/pnas.0502579102. PMC 1129138. PMID 15870187.
- ^ Slee A, Nazareth I, Bondaronek P, Liu Y, Cheng Z, Freemantle N (February 2019). "Pharmacological treatments for generalised anxiety disorder: a systematic review and network meta-analysis". Lancet. 393 (10173): 768–777. doi:10.1016/S0140-6736(18)31793-8. PMID 30712879. S2CID 72332967.
- ^ Mirza NR, Rodgers RJ, Mathiasen LS (March 2006). "Comparative cue generalization profiles of L-838, 417, SL651498, zolpidem, CL218,872, ocinaplon, bretazenil, zopiclone, and various benzodiazepines in chlordiazepoxide and zolpidem drug discrimination". The Journal of Pharmacology and Experimental Therapeutics. 316 (3): 1291–9. doi:10.1124/jpet.105.094003. PMID 16339395. S2CID 21913400.
- ^ Atack JR (May 2005). "The benzodiazepine binding site of GABA(A) receptors as a target for the development of novel anxiolytics". Expert Opinion on Investigational Drugs. 14 (5): 601–18. doi:10.1517/13543784.14.5.601. PMID 15926867. S2CID 22793644.
- ^ "DOV Pharmaceutical, Inc. Places Ocinaplon Phase III Clinical Trial On Hold". PR NewsWire. Archived from the original on 4 March 2016.
- ^ Baumann M, Baxendale IR (October 2013). "An overview of the synthetic routes to the best selling drugs containing 6-membered heterocycles". Beilstein Journal of Organic Chemistry. 9: 2265–319. doi:10.3762/bjoc.9.265. PMC 3817479. PMID 24204439.
- ^ ARKIVOC 2010 (ii) 267-282
- ^ LaMattina JL, Sulesk RT (1986). "A-Amino Acetals: 2,2-Diethoxy-2-(4-Pyridyl)Ethylamine". Organic Syntheses. 64: 19. doi:10.15227/orgsyn.064.0019.
- ^ U.S. patent 4,900,836
- ^ CA 1243029