Toll like receptor modulator compounds

A compound of Formula I

• or a pharmaceutically acceptable salt thereof,
• wherein:
• R1 is —H, C1-4 alkyl, or C1-4 haloalkyl;
• R2 is C1-6 alkyl or C1-6 haloalkyl;
• Q is CR4;
• R3 and R4 are taken together to form phenyl
• optionally substituted with 1 to 3 R5;
• each R5 is independently halogen, —OH, —NH2, —CN, C1-4 alkyl optionally substituted with 1 to 3 RZ, C1-4 haloalkyl, C1-4 alkoxy, —C(O)OH, —C(O)C1-4 alkyl, —C(O)OC1-4 alkyl, —C(O)NH2, —C(O)NH(C1-4 alkyl), —C(O)N(C1-4 alkyl)2, —N(H)C(O)C1-4 alkyl, —S(O)2C1-4 alkyl, or 5 to 6 membered heteroaryl having 1 to 3 heteroatoms selected from oxygen, nitrogen, and sulfur optionally substituted with 1 to 3 RZ;
• and
• each RZ is independently —NH2, C1-4 alkyl, halogen, —CN, —OC1-4 alkyl, C1-4 haloalkyl, or —C(O)NH2.