ChemInform Abstract: Synthesis of 12H-Benzimidazo(2,1-b) (1,3)-benzothiazin-12-ones, 11H-Pyrido(3′,2′:4,5)-imidazo(2,1-b) (1,3)benzothiazin-11-one and 11H-Pyrido(3,2-e)pyrido(3′,2′:4,5)-imidazo(2,1-b) (1,3)thiazin-11-one.
ChemInform Abstract
The title compounds (III), (IV) and (VII) (a novel ring system) are prepared with a view to their possible biological activity.