#$%^&*AU2012321111A120130516.pdf#####ABSTRACT The present disclosure provides substituted pyridine and pyrimidine compounds of Formula 1: A-X-A2 -Z-R 1 , and the pharmaceutically acceptable salts, solvates and prodrugs thereof, wherein A , X, A2, Z, and R are defined as set forth in the specification. The present disclosure is also directed to the use of compounds of Formula I to treat a disorder responsive to the blockade of sodium channels. Compounds of the present disclosure are especially useful for treating pain.