trans-Thionate Derivatives of Pt(II) and Pd(II) with Water-Soluble Phosphane PTA and DAPTA Ligands: Antiproliferative Activity against Human Ovarian Cancer Cell Lines
摘要:
A series of PTA and DAPTA platinum(II) and palladium(II) thionate complexes of the type trans-[M(SN)(2)P-2] were prepared from the reaction of cis-[MCl2P2] [M = Pt, Pd; P = PTA (1,3,5-triaza-7-phosphaadamantane), DAPTA (3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane)] with the in situ generated sodium salts of the heterocyclic thiones S-m-methylpyrimidine-2-thione, S-4,6-dimethylpyrimidine-2-thione, S-4,6-dihydroxypyrimidine-2-thione, benzothiazole-2-thione, benzoxazole-2-thione, S-1,3,4,-thiadiazole-2-thione, S-4,5-H-thiazolan-2-thione, and S-primidine-4(1H)-one-2-thione. The X-ray structures of six of the compounds confirm the trans disposition and, only in the case of [Pd2Cl2(S-pyrimidine-4(1H)-one-2-thionate)(2)(PTA)(2)], a dinuclear structure with a Pd-Pd distance of 3.0265(14)angstrom was observed. In vitro cytotoxicities against human ovarian cancer cell lines A2780 and A2780cisR were evaluated for ten complexes showing a high inhibition of cellular growth with a comparable inhibitory potency (IC50) against A2780 cells to that of cisplatin. Notably, the compounds also show significant (up to 7-fold higher) activity in cisplatin-resistant A2780cisR cell lines.
Water‐Soluble Palladium(II) Sulfonated Thiosemicarbazone Complexes: Facile Synthesis and Preliminary Catalytic Studies in the Suzuki–Miyaura Cross‐Coupling Reaction in Water
作者:Leah C. Matsinha、Jincheng Mao、Selwyn F. Mapolie、Gregory S. Smith
DOI:10.1002/ejic.201500588
日期:2015.8
very stable in water at 70 °C. Consequently, preliminarycatalytic experiments show the water-soluble complexes to be efficient catalyst precursors in the Suzuki–Miyaura cross-coupling reaction in water. No evidence of homo-coupling was observed and the water-soluble complexes demonstrated versatility in coupling substrates containing various functional groups.
Gold(I) and Palladium(II) Thiolato Complexes Containing Water‐Soluble Phosphane Ligands
作者:Elena Vergara、Susana Miranda、Fabian Mohr、Elena Cerrada、Edward R. T. Tiekink、Pilar Romero、Aránzazu Mendía、Mariano Laguna
DOI:10.1002/ejic.200700112
日期:2007.6
Water-soluble gold(I) and palladium(II) complexes containing different thiolates and the phosphanes 1,3,5-triaza-7phosphaadamantane (PTA) and 3,7-diacetyl-1,3,7-triaza-5phosphabicyclo[3.3.1]nonane (DAPTA) are described. The complexes were characterised by spectroscopic techniques including 2D NMR experiments, and the complexes
Synthesis and characterization of Pt(II) and Pd(II) PTA and DAPTA complexes
作者:Janet Braddock-Wilking、Sitaram Acharya、Nigam P. Rath
DOI:10.1016/j.poly.2014.04.040
日期:2014.9
cis- and trans-Pt(II) and Pd(II) complexes containing two PTA or DAPTA ligands (PTA = 1,3,5-triaza-7-phosphaadamantane; DAPTA = 3,7-diacetyl-1,3,7-triaza-5-phosphabicyclo[3.3.1]nonane) with the general formulas, [PtR2(PTA)2], [M(Me)X(PTA)2], [Pt(Et)X(PTA)2], [MR2(DAPTA)2], [MX2(DAPTA)2], and [M(Me)X(DAPTA)2] (where M = Pt or Pd; R = Me, Et, CCR (R = Ph, SiMe3); X = Cl, Br, I) were prepared by ligand
Platinum (II) and palladium (II) 1,3,5-triaza-7-phosphaadamantane (PTA) complexes as intramolecular hydroamination catalysts in aqueous and organic media
作者:Donald Alan Krogstad、Joonhyung Cho、Andrew J. DeBoer、Justin A. Klitzke、William R. Sanow、Heidi A. Williams、Jason A. Halfen
DOI:10.1016/j.ica.2005.08.028
日期:2006.1
6 ± 2.1 kcal/mol. The acetylide complex, trans -[Pt(C C(CH 2 ) 3 NH 2 ) 2 (PTA) 2 ] ( 6 ) precipitated from a catalytic mixture involving cis -[PtBr 2 (PTA) 2 ] ( 2 ). Spectroscopic and kinetic studies indicated that 6 and its cis analog, 7 , were the predominant species in solution and that they were both active catalysts for the cyclization reaction. These data, in conjunction with the rate trends
Cyclohexanone selenosemicarbazone: A convenient starting material for the preparation of functionalised selenosemicarbazones and their Pt and Pd complexes
The reaction of hydrazine hydrate with KSeCN in acidic aqueous ethanol in the presence of cyclohexanone affords cyclohexanone selenosemicarbazone in good yields. Cyclohexanone selenosemicarbazone was converted into various functionalised selenosemicarbazones by treatment with aldehydes. Salicylaldehyde selenosemicarbazone and its 1,2-naphthyl-derivative were prepared and reacted with some Pd(II) and