title: Synthesis and antimicrobial properties of cephalosporin derivatives substituted on the C(7) nitrogen with arylmethyloxyimino or arylmethyloxyamino alkanoyl groups.
abstract: Some 7-aminocephalosporanic acid (7-ACA) derivatives substituted on the C(7) nitrogen with 2-(arylmethyloxyimino)propionyl (3a-f), 2-(arylmethyloxyamino)propionyl (4a-d) and (arylmethyloxyamino)acetyl (2a-d) moieties were synthesized by reaction of the appropriate acylating agents with 7-ACA protected as a t-butyl ester, followed by removal of the t-butyl protecting group. The new compounds, tested in vitro for their antimicrobial activity against Gram-positive and Gram-negative bacteria, proved to possess a modest activity directed only against Gram-positive microorganisms.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Pisa, Italy.
authors.forename: D
authors.initials: D
authors.lastname: Gentili
authors.forename: M
authors.initials: M
authors.lastname: Macchia
authors.forename: E
authors.initials: E
authors.lastname: Menchini
authors.forename: S
authors.initials: S
authors.lastname: Nencetti
authors.forename: E
authors.initials: E
authors.lastname: Orlandini
authors.forename: A
authors.initials: A
authors.lastname: Rossello
authors.forename: G
authors.initials: G
authors.lastname: Broccali
authors.forename: D
authors.initials: D
authors.lastname: Limonta
mesh_terms: D002511:Cephalosporins / Q000138:chemical synthesis* / Q000494:pharmacology; D006090:Gram-Negative Bacteria / Q000187:drug effects; D006094:Gram-Positive Bacteria / Q000187:drug effects; D009682:Magnetic Resonance Spectroscopy; D008826:Microbial Sensitivity Tests
chemical_list: D002511:Cephalosporins