Optimization of phenyl-substituted benzimidazole carboxamide poly(ADP-ribose) polymerase inhibitors: identification of (S)-2-(2-fluoro-4-(pyrrolidin-2-yl)phenyl)-1H-benzimidazole-4-carboxamide (A-966492), a highly potent and efficacious inhibitor.
Penning, T.D., Zhu, G.D., Gong, J., Thomas, S., Gandhi, V.B., Liu, X., Shi, Y., Klinghofer, V., Johnson, E.F., Park, C.H., Fry, E.H., Donawho, C.K., Frost, D.J., Buchanan, F.G., Bukofzer, G.T., Rodriguez, L.E., Bontcheva-Diaz, V., Bouska, J.J., Osterling, D.J., Olson, A.M., Marsh, K.C., Luo, Y., Giranda, V.L.(2010) J.Med.Chem. 53: 3142-3153
- PubMed: 20337371 
- DOI: 10.1021/jm901775y
- PubMed Abstract: 
We have developed a series of phenylpyrrolidine- and phenylpiperidine-substituted benzimidazole carboxamide poly(ADP-ribose) polymerase (PARP) inhibitors with excellent PARP enzyme potency as well as single-digit nanomolar cellular potency. These eff ...