European Journal of Medicinal Chemistry 2010-01-01

Synthesis and cytotoxic activity of 2-methylimidazo[1,2-a]pyridine- and quinoline-substituted 2-aminopyrimidine derivatives.

Miguel Angel Vilchis-Reyes, Alejandro Zentella, Miguel Angel Martínez-Urbina, Angel Guzmán, Omar Vargas, María Teresa Ramírez Apan, José Luis Ventura Gallegos, Eduardo Díaz

Index: Eur. J. Med. Chem. 45 , 379-86, (2010)

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Abstract

A series of 2-methylimidazo[1,2-a]pyridine- and quinoline-substituted 2-aminopyrimidines derivatives were synthesized using a convenient synthetic route. We evaluate the isosteric replacement of methyl groups in 4-(2-methylimidazo[1,2-a]pyridin-3-yl)-N-p-tolylpyrimidin-2-amine (compound 1) by trifluoromethyl groups and the isosteric substitution of the 2-methylimidazo[1,2-a]pyridin-3-yl scaffold by quinolin-4-yl or quinolin-3-yl moieties. The replacement of hydrogen by fluorine does not affect notably the cytotoxic activity and CDK inhibitor activity in this series. Quinolin-4-yl-substituted compound, 8, presents cytotoxic activity and is most effective and selective against CDK1/CycA than against CDK2/CycB. Compound 11, which has a quinolin-3-yl moiety is CDK inhibitor but presents null cytotoxic activity. Quinolin-4-yl-substituted compounds constitute a new lead of cytotoxic and CDK inhibitor compounds from which more compelling and selective inhibitors can be designed.Copyright 2009 Elsevier Masson SAS. All rights reserved.


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