Compounds of the formula I:
1
wherein
R
1
, R
2
, R
1
′ and R
2
′ are independently hydrogen or a group releasing the free amine in vivo, R
6
is a substituted phenyl or an optionally substituted, bicyclic or tricyclic aryl ring system or an optionally substituted mono, bi- or tricyclic heteroaryl ring system having utility as DHFR inhibitors with favourable pharmacokinetic properties.
化合物的式子为I:1,其中R1、R2、R1'和R2'独立地表示
氢或在体内释放游离胺基的基团,R6表示取代的
苯基或可选取代的双环或
三环芳基环系统或可选取代的单环、双环或
三环杂芳基环系统,具有作为DHFR
抑制剂的实用性和良好的药代动力学性质。