((2S,4R)-4-((tert-butyldimethylsilyl)oxy)-5-oxopyrrolidin-2-yl)methyl 4-methylbenzenesulfonate

N-(2-fluoro-3,5-dimethoxyphenyl)-3-(1-methyl-1H-pyrazol-4-yl)pyrido[2,3-b]pyrazin-6-amine

3-(1-methyl-1H-pyrazol-4-yl)pyrido[2,3-b]pyrazin-6(5H)-one

6-chloro-3-(1-methyl-1H-pyrazol-4-yl)pyrido[2,3-b]pyrazine

3-bromo-6-chloropyrido[2,3-b]pyrazine