1 DTM 2,4-diamino-6-[N-(3',4',5'-trimethoxybenzyl)-N-methylamino]pyrido[2,3-D]pyrimidine 1.000 2 COQ 2,4-diamino-6-[N-(3',5'-dimethoxybenzyl)-N-methylamino]pyrido[2,3-D]pyrimidine 0.926 3 PRD N6-(2,5-dimethoxy-benzyl)-n6-methyl-pyrido[2,3-D]pyrimidine-2,4,6-triamine 0.793 4 COG 2,4-diamino-6-[N-(2',5'-dimethoxybenzyl)-N-methylamino]quinazoline 0.733