Inhibitors of the notch transcriptional activation complex kinase (“NACK”) and methods for use of the same

A compound of Formula (Ia), or a pharmaceutically acceptable salt thereof:

• wherein:
• A is C1-4alkyl or
• X is CH or N;
• Y is CH2 or N, and when X is N, then Y is CH2;
• m is 0 or 1, and when m is 1 then Y is CH2;
• n is 0 or 1;
• R1 is H, C1-6alkyleneC(═O)R6, halo, cyano, aryloxy, amino, C0-3alkylene-amido, carbamyl, S-thiocarbamyl, or ureido;
• R2 is H, halo, C1-6alkyl, C3-8cycloalkyl, or heteroaryl;
• each R3 and R4 independently is H, C1-6 alkyl, or C1-3aralkyl, or R3 and R4 and the nitrogen to which they are attached join together to form a 3-6 membered ring optionally comprising 1 to 3 additional heteroatoms selected from N, 0, and S;
• R5 is H, or R1 and R5 together with the atoms to which they are attached form a 5- or 6-membered heterocyclic ring comprising 1 to 3 ring heteroatoms selected from N, O, and S;
• R6 is OH, C1-6alkyl, or OC1-6alkyl;
• and
• R7 is H, halo or amino;
• with the proviso that the compound is not