DIAMINOISOTHIAZOLE-1-OXIDES AND 1,1-DIOXIDES

Novel diamino isothiazole-1-oxides and -1,1-dioxides having the formulae: are disclosed wherein: R is e.g. hydrogen, loweralkyl; p is 1 or 2; n is 0 or 1; m is 2 to 4; X is oxygen, sulfur or methylene; R is e.g. hydrogen, halogen or loweralkyl; R and R are e.g. independently hydrogen or loweralkyl; and A/ &cir& is phenylene or a 5- or 6-membered heterocycle containing one to three heteroatoms selected from oxygen, sulfur or nitrogen, which may optionally have a benzo ring fused thereon; and, a substituted 5-membered heterocycle wherein the substituents are loweralkyl, loweralkoxy, carbonyl, halo, carbamoyl, substituted carbamoyl; provided that when in A/ &cir& Formulae Ia and Ib above is a 5-membered heterocycle, or a benzo fused 5-membered heterocycle containing one heteroatom, n is 1; and, the physiologically acceptable salts and N-oxides thereof. Processes for preparing such compounds are also disclosed. The compounds are useful for suppressing gastric acid secretions in mammals.