title: [Reactivity of 3-aryl-4-amino-5-mercapto-4H-1,2,4-triazoles: synthesis and biological evaluation of 3,6-diaryl derivatives of 7H-1,2,4-thiazole[3,4-b][1,3,4]thiadiazines, of 3-aryl-4-amino-5-carboxymethylthio-4H-1,2,4-triazoles].
abstract: Starting from 3-aryl-4-amino-5-mercapto-4H-1,2,4-triazoles (II), two series of 3,6-disubstituted 7H-1,2,4-triazol [3,4-b] [1,3,4] thiadiazines (III) and their 5-carboxymethylthio derivatives (IV) were prepared. From the mercapto-amino-triazoles (II) because of their reactivity in some oxidising media, were obtained the triazole derivatives (V), (VI) and (VII). The synthesis of the alpha-thioketones (VIII) of 3-aryl-5-mercapto-1,3,4-oxadiazoles (I), used in alternative synthesis of triazole-thiadiazines (III), is also reported. All the substances described were subjected to biological screening. In the tests, the carboxymethylthiotriazole (IV) showed weak antiinflammatory activity (carrageenin edema) and more consistent scavanger activity, in vitro, on superoxide anions. The triazole-thiadiazines (III) and triazoles (II), (V) and (VI) showed moderate antimycotic activity.
authors.affiliation: Istituto di Chimica Farmaceutica e Tossicologica dell'Università di Catania.
authors.forename: G
authors.initials: G
authors.lastname: Mazzone
authors.forename: F
authors.initials: F
authors.lastname: Bonina
authors.forename: A M
authors.initials: AM
authors.lastname: Panico
authors.forename: M
authors.initials: M
authors.lastname: Amico-Roxas
authors.forename: A
authors.initials: A
authors.lastname: Caruso
authors.forename: G
authors.initials: G
authors.lastname: Blandino
authors.forename: A
authors.initials: A
authors.lastname: Vanella
mesh_terms: D000700:Analgesics / Q000138:chemical synthesis; D000818:Animals; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000138:chemical synthesis*; D000935:Antifungal Agents / Q000138:chemical synthesis*; D055598:Chemical Phenomena; D002621:Chemistry; D005658:Fungi / Q000187:drug effects; D008297:Male; D051379:Mice; D008826:Microbial Sensitivity Tests; D051381:Rats; D011919:Rats, Inbred Strains; D013481:Superoxides / Q000378:metabolism; D013829:Thiadiazines / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D013843:Thiazines / Q000138:chemical synthesis*; D013844:Thiazoles / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity; D014230:Triazoles / Q000138:chemical synthesis* / Q000494:pharmacology / Q000633:toxicity
chemical_list: D000700:Analgesics; D000894:Anti-Inflammatory Agents, Non-Steroidal; D000935:Antifungal Agents; D013829:Thiadiazines; D013843:Thiazines; D013844:Thiazoles; D014230:Triazoles; D013481:Superoxides
vernacular_title: Reattivita' di 3-aril-4-ammino-5-mercapto-4H-1,2,4-triazoli: sintesi e valutazione biologica di 3,6-diarilderivati della 7H-1,2,4-triazolo[3,4-b] [1,3,4]tiadiazina, di 3-aril-4-ammino-5-carbossimetiltio-4H-1,2,4-triazoli e di alcuni 3-aril-4H-1,2,4-triazoli.