5 6 7 8 tetrahydroimidazo 1 2 a pyrimidine July 8, 2019 16 32 64 128 2 4 5 6-tetraaminopyrimidine 2 8-dimethyl-6-(4 4 5 5-tetramethyl-1 3 2-dioxaborolan-2-yl)imidazo 1 2-b pyridazine 4-(1h-pyrazol-4-yl)-7h-pyrrolo 2 3-d pyrimidine 5 6 7 8-tetrahydroisoquinoline