Kinase inhibitor compounds

A compound of formula I:

• or a salt thereof;
• or a prodrug, or a salt of a prodrug thereof;
• or a hydrate, solvate, or polymorph thereof;
• wherein:
• R1, R2, R3, R4, R5, R6 are each independently hydrogen, halo, (C1-C3) alkyl, (C1-C3) alkoxy, and (C1-C3) alkylamino;
• R7 is hydrogen, halo, (C1-C6) alkyl, (C1-C6) alkoxy, and (C1-C6) alkylamino wherein the alkyl is optionally substituted by one or two groups that are independently hydroxyl, (C1-C3) alkoxy, and (C1-C3) alkylamino;
• R8 is C(O)NR9R10 or NHR11;
• R9 and R10 are each independently hydrogen, (C1-C6) alkyl, (C3-C8) cycloalkyl, (C3-C8) heterocyclyl, or R9 and R10 together with the nitrogen they are attached to form a (C3-C8) heterocycle;
• R11 is a (C3-C8) cycloalkyl or (C3-C8) heterocycle provided that the cycloalkyl or heterocycle is substituted by 1, 2, 3, or 4 groups that are independently oxo, hydroxyl, (C1-C6)alkyl, (C1-C3) alkoxy, (C1-C3) alkylamino, heterocycle, amide, hydroxyl(C1-C6)allyl, or (C1-C3)alkoxy(C1-C3)alkyl;
• X1, X2 are each independently N or CR4.