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    2-Aminopyrimidines as dual adenosine A1/A2A antagonists

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    Date
    2015
    Author
    Robinson, Sarel J.
    Petzer, Jacobus P.
    Terre'Blanche, Gisella
    Petzer, Anél
    Van der Walt, Mietha M.
    Bergh, Jacobus J.
    Lourens, Anna C.U.
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    Abstract
    In this study thirteen 2-aminopyrimidine derivatives were synthesised and screened as potential antagonists of adenosine A1 and A2A receptors in order to further investigate the structure activity relationships of this class of compounds. 4-(5-Methylfuran-2-yl)-6-[3-(piperidine-1-carbonyl)phenyl]pyrimidin-2-amine (8m) was identified as a compound with high affinities for both receptors, with an A2AKi value of 6.34 nM and an A1Ki value of 9.54 nM. The effect of selected compounds on the viability of cultured cells was assessed and preliminary results indicate low cytotoxicity. In vivo efficacy at A2A receptors was illustrated for compounds 8k and 8m since these compounds attenuated haloperidol-induced catalepsy in rats. A molecular docking study revealed that the interactions between the synthesised compounds and the adenosine A2A binding site most likely involve Phe168 and Asn253, interactions which are similar for structurally related adenosine A2A receptor antagonists
    URI
    http://hdl.handle.net/10394/18353
    https://www.sciencedirect.com/science/article/pii/S0223523415302798
    https://doi.org/10.1016/j.ejmech.2015.09.035
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