1 MXA 6-(2,5-dimethoxy-benzyl)-5-methyl-pyrido[2,3-D]pyrimidine-2,4-diamine 1.000 2 D2J 6-{3-[(2,4-diamino-5-methylpyrido[2,3-D]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}hexanoic acid 0.774 3 D2K Ethyl 4-{3-[(2,4-diamino-5-methylpyrido[2,3-D]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}butanoate 0.774 4 D2O 6-[2-methoxy-5-(2-phenylethoxy)benzyl]-5-methylpyrido[2,3-D]pyrimidine-2,4-diamine 0.774 5 D2Q Ethyl 5-{2-[(2,4-diamino-5-methylpyrido[2,3-D]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}pentanoate 0.750 6 D2N Ethyl 6-{3-[(2,4-diamino-5-methylpyrido[2,3-D]pyrimidin-6-yl)methyl]-4-methoxyphenoxy}hexanoate 0.727