Platinum(<scp>ii</scp>) clovers targeting G-quadruplexes and their anticancer activities
作者:Xiao-Hui Zheng、Qian Cao、Yi-Liang Ding、Yi-Fang Zhong、Ge Mu、Peter Z. Qin、Liang-Nian Ji、Zong-Wan Mao
DOI:10.1039/c4dt02760d
日期:——
The excellent anticancer activity of platinum(ii) clovers is the result of a dual effect, inhibition of the telomerase activity and repression of oncogene expression.
铂(II)三叶草的出色抗癌活性是由于其双重效应,即抑制端粒酶活性和抑制癌基因表达。
Labeled transition metal complexes
申请人:Lacombe Marie
公开号:US09188590B2
公开(公告)日:2015-11-17
The invention relates to a labeled transition metal complex comprising a transition metal atom, a reactive moiety for allowing a chemical or biological entity to become attached to the transition metal atom, an inert tridentate moiety as a stabilizing bridge, and a marker. The invention also relates to a labeled chemical or biological entity comprising a chemical or biological entity which is attached to said labeled transition metal complex, to the use of said complex for creating a defined shift in the molecular mass of said entity in order to facilitate mass spectrometric analysis of said entity, to methods for rendering chemical or biological entities distinguishable by mass spectrometry as well as to methods for mass spectrometric analysis of the chemical or biological entities. In addition, the present invention also relates to a set of at least two of said transition metal complexes of different molecular mass, to transition metal complexes comprising different stable isotopes, to chemical or biological entities obtained by a method of the invention and to a kit of parts supporting the use and/or methods of the invention.
Platinum(II) complexes catalyze reactions between platinum(IV) complexes and 9-methylxanthine‡
作者:Rosette M. Roat、Maria J. Jerardi、Catherine B. Kopay、Danica C. Heath、Jessica A. Clark、Jessa A. DeMars、John M. Weaver、Ernst Bezemer、Jan Reedijk
DOI:10.1039/a703749j
日期:——
Reactions between 9-methylxanthine (9-mxan) and platinum(IV) complexes having ammine, organic amine and chloro ligands are speeded up dramatically by additions of small amounts of the analogous platinum(II) complex. Complexes studied include cis-dichlorodiammineplatinum(II) cis-[Pt(NH3)2Cl2] 1a}, cis-tetrachlorodiammineplatinum(IV) cis-[Pt(NH3)2Cl4] 1b}, cis-dichloroammine(cyclohexylamine)platinum(II)
Thiolate Bridging and Metal Exchange in Adducts of a Zinc Finger Model and Pt<sup>II</sup> Complexes: Biomimetic Studies of Protein/Pt/DNA Interactions
作者:Elky Almaraz、Queite A. de Paula、Qin Liu、Joseph H. Reibenspies、Marcetta Y. Darensbourg、Nicholas P. Farrell
DOI:10.1021/ja711254q
日期:2008.5.1
yield the corresponding [Zn(dien)Cl](+) ion. Direct synthesis of the Zn-Pt thiolate-bridged species and the Pt(N2S2) chelate, where Pt has displaced the Zn from the chelate core, permitted the isolation of X-ray-quality crystals to confirm the bridging and metal-exchanged structures. The ESI-MS, (195)Pt NMR spectroscopy, and molecularstructures of the di- and trinuclear complexes will be discussed
The Neglected Pt−N(sulfonamido) Bond in Pt Chemistry. New Fluorophore-Containing Pt(II) Complexes Useful for Assessing Pt(II) Interactions with Biomolecules
作者:Anna Maria Christoforou、Patricia A. Marzilli、Luigi G. Marzilli
DOI:10.1021/ic0606375
日期:2006.8.1
data establish that Pt(DNS-dien) has a Pt-C8 bond and a Pt-N(sulfonamido) bond. Pt(DNSH-dien)Cl and [Pt(DNSH-tren)Cl]Cl bind to N7 of 6-oxopurines (e.g., 5'-GMP, 3'-IMP, and 9-ethylguanine) and sulfur of methionine (met). Competition and challenge reactions for Pt(II) with met and 5'-GMP typically reveal that met binding is favored kinetically but that 5'-GMP binding is favored thermodynamically. This
用DNSH-tren处理顺式Pt(Me2SO)2Cl2可得到[Pt(DNSH-tren)Cl] Cl和DNSH-dienH,在越来越基本的条件下,导致Pt(DNSH-dienH)Cl(2),Pt (DNSH-dien)Cl和Pt(DNS-dien)。(DNSH = 5-(二甲基氨基)萘-1-磺酰基,通过磺酰胺基与三(2-氨基乙基)胺(DNSH-tren)和二亚乙基三胺(DNSH-dienH)连接; DNSH-dienH中的H表示质子有时会丢失在Pt结合时,即dienH部分的磺酰胺NH和DNSH部分的H8)。三种中性DNSH-dienH-衍生的复合物分别是双官能的,单官能的和无官能的,并且随着丹磺酰基基团到Pt的距离的减小,荧光依次递减。2D NMR数据确定Pt(DNS-dien)具有Pt-C8键和Pt-N(磺酰胺基)键。Pt(DNSH-dien)Cl和[Pt(DNSH-tren)Cl] C