Discovery and SAR study of 2-(1-propylpiperidin-4-yl)-3H-imidazo[4,5-c]pyridine-7-carboxamide: A potent inhibitor of poly(ADP-ribose) polymerase-1 (PARP-1) for the treatment of cancer

Add time:07/12/2019    Source:sciencedirect.com

A series of imidazo[4,5-c]pyridine-7-carboxamide derivatives as poly(ADP-ribose) polymerase (PARP) inhibitors have been developed. All target compounds were evaluated for their PARP-1 inhibitory activity and some were further assessed for cellular potency. These efforts led to identification of a novel PARP-1 inhibitor 2-(1-propylpiperidin-4-yl)-3H-imidazo[4,5-c]pyridine-7-carboxamide 11a (XZ-120312). 11a displayed strong inhibition against the PARP-1 enzyme with an IC50 of 8.6 ± 0.6 nM and excellent potentiation of temozolomide cytotoxicity in cancer cell lines SW-620, MDA-MB-468 and A549 by 4.0, 3.0 and 7.7 times, respectively.

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