title: New copper(I) phosphane complexes of dihydridobis(3-nitro-1,2,4-triazolyl)borate ligand showing cytotoxic activity.
abstract: New copper(I) complexes of the type [H(2)B(tz(NO2))(2)]Cu[PR(3)](2) (1-5), [H(2)B (tz(NO2))(2)]Cu[dppe] (6) and [H(2)B(tz(NO2))(2)]Cu[PR(3)] (7, 8) have been synthesized from the reaction of CuCl, potassium dihydrobis(3-nitro-1,2,4-triazol-1-yl)borate, K[H(2)B (tz(NO2))(2)], and mono- or bi-dentate tertiary phosphanes. The complexes obtained have been characterized by elemental analyses and FT-IR in the solid state, and by NMR ((1)H and (31)P{(1)H}) spectroscopy in solution. Selected complexes 1, 3 and 5 have also been tested against a panel of several human tumor cell lines in order to evaluate their cytotoxic activity. Complexes 1 and 5 showed IC(50) values appreciably lower than those exhibited by cisplatin, the most used metal-based antitumor drug. It is worth noting that all three tested Cu(I) complexes appear to be particularly effective against A549 carcinoma cells that are resistant to cisplatin treatment.
authors.affiliation: Dipartimento di Scienze Farmaceutiche, Università di Padova, via Marzolo 5, 35131 Padova, Italy. cristina.marzano@unipd.it
authors.forename: Cristina
authors.initials: C
authors.lastname: Marzano
authors.forename: Maura
authors.initials: M
authors.lastname: Pellei
authors.forename: Simone
authors.initials: S
authors.lastname: Alidori
authors.forename: Andrea
authors.initials: A
authors.lastname: Brossa
authors.forename: Giancarlo Gioia
authors.initials: GG
authors.lastname: Lobbia
authors.forename: Francesco
authors.initials: F
authors.lastname: Tisato
authors.forename: Carlo
authors.initials: C
authors.lastname: Santini
mesh_terms: D000970:Antineoplastic Agents / Q000737:chemistry* / Q000494:pharmacology*; D001881:Borates / Q000737:chemistry* / Q000627:therapeutic use*; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D002945:Cisplatin / Q000494:pharmacology; D003300:Copper / Q000737:chemistry*; D004354:Drug Screening Assays, Antitumor; D006801:Humans; D008024:Ligands; D015394:Molecular Structure; D009942:Organometallic Compounds / Q000737:chemistry* / Q000494:pharmacology*; D009943:Organophosphorus Compounds / Q000737:chemistry / Q000494:pharmacology; D010720:Phosphines / Q000737:chemistry
chemical_list: D000970:Antineoplastic Agents; D001881:Borates; D008024:Ligands; D009942:Organometallic Compounds; D009943:Organophosphorus Compounds; D010720:Phosphines; D003300:Copper; D002945:Cisplatin