title: Expanding monomeric pyrophosphate complexes beyond platinum.
abstract: Four new monomeric pyrophosphate complexes, namely [Co(phen)(2)(H(2)P(2)O(7))] x 4 H(2)O (1 x 4 H(2)O), [Ni(phen)(2)(H(2)P(2)O(7))] x 8 H(2)O (2 x 8 H(2)O), [Cu(phen)(H(2)O)(H(2)P(2)O(7))] (3) and {[Cu(phen)(H(2)O)(P(2)O(7))][Na(2)(H(2)O)(8)]} x 6 H(2)O (4 x 14 H(2)O) have been isolated and structurally characterized. The impact of pH and stoichiometry in obtaining 1-4 is described. These complexes have been tested against the adriamycin-resistant ovarian cancer cell line A2780/AD, revealing highly significant (nM) IC(50) values, compared to microM IC(50) values for cisplatin controls.
authors.affiliation: Department of Chemistry, Syracuse University, Syracuse, New York 13244-4100, USA.
authors.forename: Nadia
authors.initials: N
authors.lastname: Marino
authors.forename: Anthony R
authors.initials: AR
authors.lastname: Vortherms
authors.forename: Amanda E
authors.initials: AE
authors.lastname: Hoffman
authors.forename: Robert P
authors.initials: RP
authors.lastname: Doyle
mesh_terms: D000970:Antineoplastic Agents / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D045744:Cell Line, Tumor; D011756:Diphosphates / Q000737:chemistry*; D006801:Humans; D020128:Inhibitory Concentration 50; D008958:Models, Molecular; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000138:chemical synthesis / Q000737:chemistry* / Q000494:pharmacology; D010984:Platinum / Q000737:chemistry*
chemical_list: D000970:Antineoplastic Agents; D011756:Diphosphates; D009942:Organometallic Compounds; D010984:Platinum