Compounds represented by formula I:
1
wherein R
1
is H, halogen, (C
1-4
)alkyl, O(C
1-4
)alkyl, and haloalkyl; R
2
is H or (C
1-4
)alkyl; R
3
is H or (C
1-4
)alkyl; R
4
is (C
1-4
)alkyl, (C
1-4
)alkyl(C
3-7
)cycloalkyl, or (C
3-7
)cycloalkyl; and Q is a fused phenyl-5 or 6-membered saturated heterocycle having one to two heteroatoms selected from O and N, said Q being optionally substituted with hydroxy, or (C
1-4
)alkyl which in turn maybe optionally substituted with pyridinyl-N-oxide or C(O)OR wherein R is H or (C
1-4
)alkyl; or a salt thereof. The compounds have inhibitory activity against Wild Type, and single and double mutants strains, of HIV.