Synthesis and biological evaluation of 2-(5-methyl-4-phenyl-2-oxopyrrolidin-1-yl)-acetamide stereoisomers as novel positive allosteric modulators of sigma-1 receptor.

Autor: Veinberg G; Latvian Institute of Organic Synthesis, 21 Aizkraukles Str., Riga LV 1006, Latvia. veinberg@osi.lv, Vorona M, Zvejniece L, Vilskersts R, Vavers E, Liepinsh E, Kazoka H, Belyakov S, Mishnev A, Kuznecovs J, Vikainis S, Orlova N, Lebedev A, Ponomaryov Y, Dambrova M
Jazyk: angličtina
Zdroj: Bioorganic & medicinal chemistry [Bioorg Med Chem] 2013 May 15; Vol. 21 (10), pp. 2764-71. Date of Electronic Publication: 2013 Mar 24.
DOI: 10.1016/j.bmc.2013.03.016
Abstrakt: Novel positive allosteric modulators of sigma-1 receptor represented by 2-(5-methyl-4-phenyl-2-oxopyrrolidin-1-yl)-acetamide enantiomers were synthesised using an asymmetric Michael addition of 2-nitroprop-1-enylbenzene to diethyl malonate. Following the chromatographic separation of the methyl erythro- and threo-4-nitro-3R- and 3S-phenylpentanoate diastereoisomers, target compounds were obtained by their reductive cyclisation into 5-methyl-4-phenylpyrrolidin-2-one enantiomers and the attachment of the acetamide group to the heterocyclic nitrogen. Experiments with electrically stimulated rat vas deference contractions induced by the PRE-084, an agonist of sigma-1 receptor, showed that (4R,5S)- and (4R,5R)-2-(5-methyl-4-phenyl-2-oxopyrrolidin-1-yl)-acetamides with an R-configuration at the C-4 chiral centre in the 2-pyrrolidone ring were more effective positive allosteric modulators of sigma-1 receptor than were their optical antipodes.
(Copyright © 2013 Elsevier Ltd. All rights reserved.)
Databáze: MEDLINE
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