The present invention comprises a new class of compounds capable of modulating the c-kit protein kinase and, accordingly, useful for treatment of c-kit mediated diseases including, without limitation, autoimmune disease, allergies, mastcytosis, mast cell related tumors and various fibrotic diseases. The compounds have a general Formula I wherein R1-5, X, Y and Z are defined herein. The invention further comprises pharmaceutical compositions, methods for treatment of c-kit mediated diseases, and intermediates and processes useful for the preparation of compounds of the invention.