Abstract: Disclosed are pyrazole compounds of general formula (I), wherein R, R1, Rc, Rd, Re, Rf, X, Y, Z, A and B are as defined in the application. These compounds are active as inhibitors of poly(ADP-ribose)polymerase (PARP) and are useful in methods for treating diseases or conditions mediated by PARP, including breast cancer and malignant melanoma.