Structure-Activity Relationship of 2-arylquinazolin-4-ones as tankyrase inhibitors.
8-Methyl group gives selectivity for tankyrases over PARP-1 and PARP-2.
Polar groups at the 8-position give poor isoform-selectivity.
Crystal structures rationalised the observed selectivity.
Reveal a novel, potent and selective tankyrase and Wnt signalling inhibitor.