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

(R)-5-(((2-fluoro-3,5-dimethoxyphenyl)(3-(1-methyl-1H-pyrazol-4-yl)pyrido[2,3-b]pyrazin-6-yl)amino)methyl)-1-(2-hydroxyethyl)pyrrolidin-2-one

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

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

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