A novel heterogeneous catalytic method to synthesize variousheterocycliccompounds of biological interest, aminobenzisothiazole [2a-h] and 1,3-thiazine derivatives [4, 6], using an environmentally attractive solid catalyst, zeolite, is described.
Some new N-(1,2-benzisothiazol-3-yl)amidines were synthesized and tested for antiinflammatory, antipyretic, analgesic and spasmolytic activities in comparison with indomethacin and papaverine respectively. The synthesis of the new compounds has been described. All the amidinobenzisothiazoles showed remarkable analgesic action and an interesting antiphlogistic action, while only one drug displayed a certain antipyretic activity. As regards spasmolytic activity, 3 compounds out of 6 demonstrated a papaverine-like effect.
Vicini; Zani, Il Farmaco, 1997, vol. 52, # 1, p. 21 - 24