title: Synthesis and antitubercular activity of imidazo[2,1-b]thiazoles.
abstract: A number of selected imidazo[2,1-b]thiazoles entered the screening at the Tuberculosis Antimicrobial Acquisition and Coordinating Facility (TAACF) and one of these compounds, 2-chloro-6-phenylimidazo[2,1-b]thiazole, showed antitubercular activity. On this basis we planned the synthesis of new analogues bearing a substituted ring at the 6 position. For one compound only (2-chloro-6-p-chlorophenylimidazo[2,1-b]thiazole) the 5-nitroso derivative was also prepared. The antitubercular activity of these compounds was compared with the known analogues lacking the chlorine at the 2 position. 5-Nitroso-6-p-chlorophenylimidazo[2,1-b]thiazole showed potent antitubercular activity.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Bologna, Via Belmeloro 6, I-40126 Bologna, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Andreani
authors.forename: M
authors.initials: M
authors.lastname: Granaiola
authors.forename: A
authors.initials: A
authors.lastname: Leoni
authors.forename: A
authors.initials: A
authors.lastname: Locatelli
authors.forename: R
authors.initials: R
authors.lastname: Morigi
authors.forename: M
authors.initials: M
authors.lastname: Rambaldi
mesh_terms: D000995:Antitubercular Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D007093:Imidazoles / Q000138:chemical synthesis* / Q000494:pharmacology*; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests; D009169:Mycobacterium tuberculosis / Q000187:drug effects*; D013055:Spectrophotometry, Infrared; D013844:Thiazoles / Q000138:chemical synthesis* / Q000494:pharmacology*
chemical_list: D000995:Antitubercular Agents; D007093:Imidazoles; D013844:Thiazoles