The invention relates to compounds represented by Formula (I): ##STR00001## and to pharmaceutically acceptable salts or solvates of said compounds, wherein each of A, R.sup.3-8, X.sup.3, X.sup.5, m, and n are defined herein. The invention also relates to pharmaceutical compositions containing the compounds of Formula (I) and to methods of treating hyperproliferative disorders in a mammal by administering compounds of Formula (I).