5-Diaza-aryl-3-substituted pyridone compounds

A compound according to the formula ##STR7## wherein:

• R.sub.1 is hydrogen, lower alkyl, hydroxyloweralkyl or phenloweralkyl;
• R.sub.3 is lower alkyl, cyano, guanidino, thioureido, ureido, carboxyl, lower alkoxy, hydroxyl, hydroxy loweralkyl, loweralkyl acylamino, carbamoyl, carbamoyl guanidino, or cyanoguanidino;
• R.sub.4 and R.sub.6 are each independently hydrogen or lower alkyl;
• R.sub.5 is a 6 membered ring heteroaryl group including at least two nitrogen atoms and four carbon atoms in the ring;
• and, wherein:
• one of the heteroaryl hydrogen atoms may be substituted by halo, lower alkyl, halo loweralkyl, hydroxy loweralkyl, hydroxy, lower alkylamino, dilower alkylamino, amino, loweralkyl acylamino, lower alkanoyl, cyano or nitro;
• or a pharmaceutically acceptable salt thereof.