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  • Title: Pyrazolo[3,4-c]pyridazines as novel and selective inhibitors of cyclin-dependent kinases.
    Author: Braña MF, Cacho M, García ML, Mayoral EP, López B, de Pascual-Teresa B, Ramos A, Acero N, Llinares F, Muñoz-Mingarro D, Lozach O, Meijer L.
    Journal: J Med Chem; 2005 Nov 03; 48(22):6843-54. PubMed ID: 16250643.
    Abstract:
    Pyrazolopyridazine 1a was identified in a high-throughput screening carried out by BASF Bioresearch Corp. (Worcester, MA) as a potent inhibitor of CDK1/cyclin B and shown to have selectivity for the CDK family. Analogues of the lead compound have been synthesized and their antitumor activities have been tested. A molecular model of the complex between the lead compound and the CDK2 ATP binding site has been built using a combination of conformational search and automated docking techniques. The stability of the resulting complex has been assessed by molecular dynamics simulations and the experimental results obtained for the synthesized analogues have been rationalized on the basis of the proposed binding mode for compound 1a. As a result of the SAR study, monofuryl 1o has been synthesized and is one of the most active compounds against CDK1 of this series.
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