Imidazopyridazine il-17 inhibitor compounds

A compound of Formula (I):

• or a pharmaceutically acceptable salt thereof, wherein:
• R1 is:
• R1a independently for each occurrence is —C(1-3)alkyl or —C(3-5)cycloalkyl, wherein the —C(1-3)alkyl is unsubstituted or substituted with one to five fluorine atoms and wherein the —C(3-5)cycloalkyl is unsubstituted or substituted with one —CN group, or two R1a groups together with the carbon atom or atoms to which they are attached form a spirocyclic or fused C(3-7)cycloalkyl, wherein the C(3-7)cycloalkyl is unsubstituted or substituted with one to five fluorine atoms;
• m is 0, 1, 2, or 3;
• R2 is H, —C(1-3)alkyl, —C(3-5)cycloalkyl, —C(1-3)alkyl-O—C(1-3)alkyl, or —C(1-3)alkyl-O—C(3-5)cycloalkyl, wherein the —C(1-3)alkyl, —C(3-5)Cycloalkyl, —C(1-3)alkyl-O—C(1-3)alkyl, and —C(1-3)alkyl-O—C(3-5)cycloalkyl groups are unsubstituted or substituted with one to six R2a groups;
• R2a independently for each occurrence is fluorine or —CN;
• R3 is —C(1-6)alkyl, —C(1-6)alkyl-O—C(1-6)alkyl, —C(1-6)alkyl-O—C(3-5)cycloalkyl, or —C(3-8)cycloalkyl, each of which is unsubstituted or substituted with one to six fluorine atoms;
• R4 is a 5-membered heteroaryl that is unsubstituted or substituted with one to two R4a groups or a —C(3-5)cycloalkyl that is unsubstituted or substituted with one to two Rob groups;
• R4a is halo, —C(1-6)alkyl, —O—C(1-6)alkyl, —C(1-6)alkyl-O—C(1-6)alkyl, or —C(0-2)alkyl-C(3-6)cycloalkyl, wherein the —C(1-6)alkyl, —O—C(1-6)alkyl, —C(1-6)alkyl-O—C(1-6)alkyl, and —C(0-2)alkyl-C(3-6)cycloalkyl are unsubstituted or substituted with one to six substituents independently selected from fluorine, —CH3, —CD3, —CD2CD3, —CH2F, —CHF2, and —CF3;
• and
• R4b is —C(1-6)alkyl that is unsubstituted or substituted with one to six fluorine atoms;
• provided that:
• when m is 1 and R1a is —CF3, then R3 is —C(1-6)alkyl, —C(1-6)alkyl-O—C(1-6)alkyl, or —C(1-6)alkyl-O—C(3-5)cycloalkyl, each of which is unsubstituted or substituted with one to six fluorine atoms;
• or
• when m is 1 and R1a is —CF3, then R2 is —C(3-5)cycloalkyl, —C(2-3)alkyl-O—C(1-3)alkyl, or —C(1-3)alkyl-O—C(3-5)Cycloalkyl, wherein the —C(3-5)cycloalkyl, —C(2-3)alkyl-O—C(1-3)alkyl, and —C(1-3)alkyl-O—C(3-5)cycloalkyl groups are unsubstituted or substituted with one to six R2a groups.