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Design and Synthesis of 2-Heterocyclyl-3-arylthio-1H-indoles as Potent Tubulin Polymerization and Cell Growth Inhibitors with Improved Metabolic Stability

La Regina, Giuseppe, Bai, Ruoli, Rensen, Willeke, Coluccia, Antonio, Piscitelli, Francesco, Gatti, Valerio, Bolognesi, Alessio, Lavecchia, Antonio, Granata, Ilaria, Porta, Amalia, Maresca, Bruno, Soriani, Alessandra, Iannitto, Maria Luisa, Mariani, Marisa, Santoni, Angela, Brancale, Andrea, Ferlini, Cristiano, Dondio, Giulio, Varasi, Mario, Mercurio, Ciro, Hamel, Ernest, Lavia, Patrizia, Novellino, Ettore and Silvestri, Romano 2011. Design and Synthesis of 2-Heterocyclyl-3-arylthio-1H-indoles as Potent Tubulin Polymerization and Cell Growth Inhibitors with Improved Metabolic Stability. Journal of Medicinal Chemistry 54 (24) , pp. 8394-8406. 10.1021/jm2012886

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Abstract

New arylthioindoles (ATIs) were obtained by replacing the 2-alkoxycarbonyl group with a bioisosteric 5-membered heterocycle nucleus. The new ATIs 5, 8, and 10 inhibited tubulin polymerization, reduced cell growth of a panel of human transformed cell lines, and showed higher metabolic stability than the reference ester 3. These compounds induced mitotic arrest and apoptosis at a similar level as combretastatin A-4 and vinblastine and triggered caspase-3 expression in a significant fraction of cells in both p53-proficient and p53-defective cell lines. Importantly, ATIs 5, 8, and 10 were more effective than vinorelbine, vinblastine, and paclitaxel as growth inhibitors of the P-glycoprotein-overexpressing cell line NCI/ADR-RES. Compound 5 was shown to have medium metabolic stability in both human and mouse liver microsomes, in contrast to the rapidly degraded reference ester 3, and a pharmacokinetic profile in the mouse characterized by a low systemic clearance and excellent oral bioavailability.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Pharmacy
Subjects: R Medicine > RS Pharmacy and materia medica
Publisher: American Chemical Society
ISSN: 0022-2623
Last Modified: 04 Jun 2017 03:01
URI: http://orca-mwe.cf.ac.uk/id/eprint/15637

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