Conception, synthèse et évaluation biologique d'inhibiteurs des phosphatases CDC25 à visée anti-tumorale

The development of CDC25 phosphatase inhibitors is an interesting approach towards new anti-tumour agents. CDC25 play key roles in cell cycle regulation and are over-expressed in numerous cancers. In order to identify promising inhibitors, we conducted in silico/in vitro screening which led to the discovery of potent molecules. [Ijpyrindine derivatives provided antiproliferative activities against cancerous cell lines but none towards a normal cell type. Structural modifications on the thiazolopyrimidine core, led to compounds which inhibit CDC25 activity and display cytotoxic activities against tumor cells. The most efficient inhibitor targets CDC25B in cells. To improve the activity of this series, novel derivatives were rapidly identified, following parallel "click" synthesis in solution and in situ screening for CDC25 inhibition. Finally, a series of dimers was designed from the thiazolopyrimidine core and evaluated for their inhibitory activity against a panel of phosphatases.