3-[[5-cyano-2-(cyclopentylamino)-6-[2,2-dimethylpropyl(methyl)amino]pyrimidin-4-yl]amino]-N-methoxy-4-methylbenzamide;3-[[5-cyano-6-[2,2-dimethylpropyl(methyl)amino]-2-(methylamino)pyrimidin-4-yl]amino]-4-methylbenzamide;3-[[5-cyano-6-[2,2-dimethylpropyl(methyl)amino]-2-(1-methylpiperidin-4-yl)oxypyrimidin-4-yl]amino]-N,4-dimethylbenzamide;4-[2,2-dimethylpropyl(methyl)amino]-2-(methylamino)-6-[2-methyl-5-(1H-1,2,4-triazol-5-yl)anilino]pyrimidine-5-carbonitrile