title: Synthesis and in vitro antibacterial activity of a new series of monobactam derivatives.
abstract: Using as a model monobactams with a substituted alpha-oxyimino moiety in the side chain (aztreonam), a series of 2-(2-aminothiazol-4-yl)-2-hydrazono-acetamido monobactam (II a, f) were prepared by condensation of the hydrazones (I a, e) (Z form) with tetrabutylammonium 3-amino-4-methyl-2-oxo-1-azetidin-sulphonate. Isomerization occurred during this synthesis and gave the E form of all compounds. Monobactams (II a, f) showed no significant in vitro antibacterial activity when compared with aztreonam and with some cephalosporins bearing the same E-hydrazono side chain.
authors.affiliation: Istituto di Chimica Organica, Università di Milano, Italy.
authors.forename: U
authors.initials: U
authors.lastname: Valcavi
authors.forename: R
authors.initials: R
authors.lastname: Aveta
authors.forename: A
authors.initials: A
authors.lastname: Brandt
authors.forename: G B
authors.initials: GB
authors.lastname: Corsi
authors.forename: E
authors.initials: E
authors.lastname: Bosone
authors.forename: P
authors.initials: P
authors.lastname: Farina
authors.forename: G
authors.initials: G
authors.lastname: Guazzi
mesh_terms: D000900:Anti-Bacterial Agents / Q000138:chemical synthesis* / Q000494:pharmacology; D001419:Bacteria / Q000187:drug effects*; D055598:Chemical Phenomena; D002621:Chemistry; D008826:Microbial Sensitivity Tests; D008997:Monobactams / Q000138:chemical synthesis* / Q000494:pharmacology
chemical_list: D000900:Anti-Bacterial Agents; D008997:Monobactams