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Chem Biol Drug Des. 2011 Nov;78(5):869-75. doi: 10.1111/j.1747-0285.2011.01215.x. Epub 2011 Sep 26.

Synthesis and in vitro Evaluation of Novel Indole-Based Sigma Receptors Ligands.

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1
Department of Pharmaceutical Chemistry, Faculty of Pharmacy, Yeditepe University, 34755 Kayisdagi, Istanbul, Turkey. myarim@yeditepe.edu.tr

Abstract

To investigate the molecular features involved in sigma (σ) receptors binding, a series of compounds based on indole scaffolds were synthesized and their chemical structures were confirmed by (1) H-NMR, IR, and elemental analysis. Their affinity toward σ(1) and σ(2) receptor subtypes was evaluated. 1-{[4-(2-phenylethyl)piperazin-1-yl]methyl}-3-methyl-1H-indole 3b had a high affinity to σ(1) receptors, while three compounds, 1-{3-[4-(substitutedphenyl)piperazin-1-yl]propyl}-1H-indole derivatives 4a-c had shown high affinity and selectivity for σ(2) receptors. Cytotoxicity of the compounds was demonstrated on cancer cell lines from liver (HUH7), breast (MCF7), and colon (HCT-116) cancer cell lines. Compound 1c (3-{[4-(3,4-dichlorobenzyl)piperazin-1-yl]methyl}-1H-indole) showed significant cell growth inhibitory activity on the selected cancer cell lines.

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