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Preferred IUPAC name
3D model (JSmol)
MeSH C072259
  • InChI=1S/C24H25FN4O2/c1-15-4-3-10-29-23(15)26-16(2)19(24(29)30)9-13-28-11-7-17(8-12-28)22-20-6-5-18(25)14-21(20)31-27-22/h3-6,10,14,17H,7-9,11-13H2,1-2H3
  • InChI=1/C24H25FN4O2/c1-15-4-3-10-29-23(15)26-16(2)19(24(29)30)9-13-28-11-7-17(8-12-28)22-20-6-5-18(25)14-21(20)31-27-22/h3-6,10,14,17H,7-9,11-13H2,1-2H3
  • CC1=CC=CN2C1=NC(=C(C2=O)CCN3CCC(CC3)C4=NOC5=C4C=CC(=C5)F)C
Molar mass 420.488 g·mol−1
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Ocaperidone (R 79598) is a benzisoxazole antipsychotic.[1] It was initially developed by Janssen, later licensed to French laboratory Neuro3D and then acquired in 2007 by German company Evotec. It was found to be more potent than risperidone in animal studies,[2] but its testing was abandoned in 2010 after unfavorable results in human Phase II trials,[3] as while it was effective at controlling symptoms of schizophrenia, ocaperidone produced an unacceptable amount of extrapyramidal side effects.[4]


Synthesis according to patent (Ex4):[5]

The last step requires attachment of the sidechain between 3-(2-bromoethyl)-2,9-dimethyl 4H-pyrido[1,2-a]pyrimidin-4-one, CID:18995805 (1) and 6-fluoro-3-(4-piperidinyl)-1,2-benzisoxazole [84163-77-9] (2) completing the convergent synthesis of Ocaperidone (3)..

See also



  1. ^ Leysen, JE; Janssen, PM; Gommeren, W; Wynants, J; Pauwels, PJ; Janssen, PA (1992). "In vitro and in vivo receptor binding and effects on monoamine turnover in rat brain regions of the novel antipsychotics risperidone and ocaperidone". Molecular Pharmacology. 41 (3): 494–508. PMID 1372084.
  2. ^ Megens AA, Awouters FH, Meert TF, Schellekens KH, Niemegeers CJ, Janssen PA. Pharmacological profile of the new potent neuroleptic ocaperidone (R 79,598). J Pharmacol Exp Ther. 1992 Jan;260(1):146-59. PMID 1370538
  3. ^ "Ocaperidone — AdisInsight". Adis Insight. Adis International Ltd, part of Springer Science+Business Media. Retrieved 10 December 2015.
  4. ^ Geerts H, Spiros A, Roberts P, Twyman R, Alphs L, Grace AA. Blinded prospective evaluation of computer-based mechanistic schizophrenia disease model for predicting drug response. PLoS One. 2012;7(12):e49732. doi:10.1371/journal.pone.0049732 PMID 23251349
  5. ^ Ludo E. J. Kennis, Jan Vandenberk, & Albertus H. M. T. Van Heertum, U.S. patent 5,482,943 (1996 to Janssen Pharmaceutica NV).