INHIBIDORES DE LA PRIMASA DE HSV

Un compuesto de la fórmula 1 en la que R1 es hidroxi o amino; R2 es hidrógeno, halo, alquilo(C1-4) o alcoxi(C1-4); R3 es hidrógeno, halo, alquilo(C1-4), alcoxi(C1-4), amino o azido; R4 tiene el mismo significado que R2; R5 es hidrógeno o alquilo(C1-4); y R es alquilo(C1-7), cicloalquilo(C3-6), [fenil- alquilo(C1-7)], [fenil-alcoxi(C1-7)], [[(heterociclo monocíclico)-[alcoxi(C1-7)]], CH(W)C(O)[O-alquilo(C1- 4)] donde W es hidrógeno o alquilo(C1-7), o donde Y es hidrógeno o alquilo(C1-7), y Z es alquilo(C1-7), cicloalquilo(C3-6), [cicloalquilo(C3- 6)]-[alquilo(C1-7)], fenil-alquilo(C1-7) o [[(heterociclo monocíclico)-[alquilo(C1-7)]], o Y y Z junto con el átomo de nitrógeno a los que están unidos representan, 1-pirrolidinilo, 1-piperidinilo, 4- morfolinilo o 1-(4-metilpiperazinilo); en las condiciones de que (1) cuando R es CH(W)C(O)-[O- alquilo(C1-4)] como aquí se define, entonces R5 es hidrógeno; y (2) al menos uno de R2, R3, y R4 es diferente de hidrógeno; o una de sus sales The invention provides compounds of the formula 1 that are active against the HSV primase enzyme:whereinR1 is hydroxy or amino;R2 is hydrogen, halo, (C1-4)alkyl or (C1-4)alkoxy; R3 is hydrogen, halo, (C1-4)alkyl, (C1-4)alkoxy, amino or azido; R4 has the same significance as R2;R5 is hydrogen or (C1-4)alkyl; and R is (C1-7)alkyl, (C3-6)cycloalkyl, {phenyl(C1-7)alkyl}, {phenyl(C1-7)alkoxy}, {{(monocyclic heterocyclo)-{(C1-7)alkoxy}}, CH(W)C(O){O-(C1-4)alkyl} wherein W is hydrogen or (C1-7)alkyl, or wherein Y is hydrogen or (C1-7)alkyl, and Z is (C1-7)alkyl, (C3-6) cycloalkyl, {(C3-6)cycloalkyl}- {(C1-7)alkyl}, phenyl(C1-7)alkyl or {{(monocyclic heterocyclo)-{(C1-7)alkyl}}, or Y and Z together with the nitrogen atom to which they are attached represent, 1-pyrrolidinyl, 1-piperidinyl, 4-morpholinyl or 1-(4-methylpiperazinyl); with the provisos that (1) when R is CH(W)C(O)-{O-(C1-4)alkyl} as defined herein, then R5 is hydrogen; and (2) at least one of R2, R3 and R4 is other than hydrogen.