135211-16-4Relevant academic research and scientific papers
Synthesis and Receptor Binding of Enantiomeric N-Substituted cis-N--2-(1-pyrrolidinyl)cyclohexylamines as High-Affinity ? Receptor Ligands
Radesca, Lilian,Bowen, Wayne D.,Paolo, Lisa Di,Costa, Brian R. de
, p. 3058 - 3065 (2007/10/02)
N-Alkyl-substituted derivatives of (+)- and (-)-cis-N--2-(1-pyrrolidinyl)cyclohexylamine have been synthesized in nine steps in a stereospecific manner starting from cyclohexene oxide.The key step in the reaction sequence invo
Synthesis and evaluation of N-substituted cis-N-methyl-2-(1-pyrrolidinyl)cyclohexylamines as high affinity σ receptor ligands. Identification of a new class of highly potent and selective σ receptor probes
De Costa,Rice,Bowen,Thurkauf,Rothman,Band,Jacobson,Radesca,Contreras,Gray,Daly,Iyengar,Finn,Vazirani,Walker
, p. 3100 - 3110 (2007/10/02)
Certain benzeneacetamides [(-)- and (+)-cis-3,4-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl]benzenea cetamide] were recently reported to be potent σ receptor ligands. In order to determine whether efficacy for the σ receptor could be improved, a series of compounds related to the benzeneacetamides, N-substituted cis-2-(1-pyrrolidinyl)-N-methylcyclohexylamines, were synthesized and their structure-activity requirements were determined. The compounds were synthesized by starting with the previously reported (±)-, 1S,2R-(+)-, and 1R,2S-(-)-cis-2-(1-pyrrolidinyl)-N-methylcyclohexylamines. Analysis of σ ([3H](+)-3-PPP), κ ([3H]bremazocine and [3H]U69,593), dopamine-d2 ([3H](-)-sulpiride), and phencyclidine (PCP) ([3H]TCP) receptor binding in guinea pig brain revealed a number of highly potent and selective σ receptor ligands. Notably, 1S,2R-cis-(-)-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl]-(2-naphthyl)ac etamide [(-)-29] (K(i) = 8.66 ± 0.35 nM), (±)-cis-2-amino-4,5-dichloro-N-methyl-N-[2-(1-pyrrolidinyl)cyclohexyl ]benzeneacetamide [(±)-17] (K(i) = 11 ± 3 nM), 1S,2R-(-)-cis-N-methyl-N-[2-(3,4-dichlorophenyl)ethyl]-2-(1-pyrrolidin yl)cyclohexylamine [(-)-44] (K(i) = 1.3 ± 0.3 nM), and 1R,2S-(+)-cis-N-methyl-N-[2-(3,4-dichlorophenyl)ethyl]-2-(1-pyrrolidin yl)cyclohexylamine. [(+)-44] (K(i) = 6 ± 3 nM) exhibited very high affinity at σ receptors, by displacement of [3H]-(+)-3-(3-hydroxyphenyl)-N-(1-propyl)piperidine ([3H]-(+)-3-PPP). These compounds showed significant affinity for κ, dopamine, or PCP receptors, making them valuable tools for the study of σ receptors. Furthermore, these compounds also exhibited enantioselectivity ranging from 5-fold for (+)- and (-)-44 to 160-fold for (+)- and (-)-29. Several other compounds showed equivalent selectivity but displayed lower σ receptor affinity.
