The first examples of platinum(II) complexes of 3-(aminomethyl)naphthoquinone Mannich bases have been synthesised and their crystal structures are described. Neutral and charged complexes have been obtained, fully characterised and their cytotoxic activities have also been investigated. 3-[(R(1)-amino)(pyridin-2-yl)methyl]-2-hydroxy-1,4-naphthoquinones (R(1) = n-Bu, HL1; Bn, HL2; furfuryl, HL3;...

Chapter 21 Phosphate-metal ion interactions of nucleotides and polynucleotides, by C. Klevickis and C. Grisham Sugar-metal ion interactions, by S. Yano and M. Otsuka Dichotomy of metal ion binding to N 1 and N7 of purines, by R. B. Martin General conclusions from solid state studies of nucleotide-metal ion complexes, by K. Aoki Solution structures of nucleotide-metal ion complexes. Isomeric equ...

The aqua ions of palladium(II) and platinum(II) undergo extremely slow hydrolysis in strongly acidic aqueous solution, resulting in polynuclear complexes. The size and structures of these species have been determined by EXAFS and small angle X-ray scattering, SAXS. For palladium(II), the EXAFS data show that the Pd-O and Pd···Pd distances are identical to those of crystalline palladium(II) oxid...

1- and 1,5-Aminoalkylamine substituted anthraquinones (AAQs, 1C3 1,5C3) were peptide coupled to 1-, 2-, 3-pyrrole lexitropsins generate compounds that incorporated both DNA minor groove intercalating moieties. The corresponding platinum(II) amidine complexes synthesized through a synthetically facile amine-to-platinum mediated nitrile ‘Click’ reaction. precursors as well the biologically evalua...

Invited for this month's cover picture are the groups of Prof. Alfonso Polo and Dr. Albert Poater at the Universitat de Girona, as well as their collaborators from the Universitat Autònoma de Barcelona and the Institute of Chemical Research of Catalonia. The cover picture shows phosphanylthiolate ligand coordination on a platinum(II) center to give only the bischelate cis -P,P isomer when the l...

trans-Bis(alkynyl)palladium complexes, trans-[(PEt3)2Pd(-CtCC{dO}NR2)2] (NR2 = NMe2 (2a), N(CH2)4 (2b)), were synthesized by two different methods: (a) by copper-catalyzed reaction of HCtCC(dO)NR2with [PdCl2(PEt3)2] under basic conditions and (b) by treatingHCtCC(dO)NR2 with AgNO3 followed by transmetalation of the alkynyl ligand from silver to [PdCl2(PEt3)2]. The reaction of AgCtCC(dO)NMe2 (3a...

Following its widespread adoption into clinical practice in the early 1970s the drug cispiatin (cis-diamminedichloroplatinum(II), cis[PrClfiH J2]) has improved substantially the response rate5 in a number of malignant conditions, particularly testicular and ovarian cancer. However, the clinical utility of the drug is limited by its toxic side effects. The most significant of these is kidney tox...

The syntheses and absorption spectra of Fe(II)TBP(pyridine)2, Pd(II)TBP, and Pt(II)TBP (TBP = Tetrabenzporphyrin) are reported. The emission spectra of PdTBP and PtTBP were measured. Both complexes exhibit only phosphorescence from the lowest triplet of TBP. The Fe complex was oxidized to the cation [FeTBP(pyn*dine)J+ which was characterized by its absorption and ESR spectrum. The emission spec...

The interaction of platinum complexes with bovine heart pyruvate kinase (PK) was studied by absorption, CD, fluorescence spectroscopy and enzymic activity test. Our results showed that activity of PK was reduced by cis-DDP and potassium tetrachloroplatinate in a time-and concentration dependent manner. Cis-DDP was less effective than K2PtCl4 in reducing PK activity. The native enzyme showed wel...

A series of π-extended phosphorescent palladium(II) and platinum(II) porphyrin complexes were synthesized, in which additional benzene rings are fused radially onto at least one of the four peripheral benzo groups. The photophysical properties of the metalloporphyrins palladium(II)-meso-tetra-(4-fluorophenyl)mononaphthotribenzoporphyrin (Pd1NF), cis-palladium(II)-meso-tetra-(4-fluorophenyl)dibe...