Stabilization of G-Quadruplex DNA with Platinum(II) Schiff Base Complexes: Luminescent Probe and Down-Regulation of c-<i>myc</i>Oncogene Expression
作者:Peng Wu、Dik-Lung Ma、Chung-Hang Leung、Siu-Cheong Yan、Nianyong Zhu、R. Abagyan、Chi-Ming Che
DOI:10.1002/chem.200901943
日期:2009.12.7
platinum(II) Schiffbasecomplexes with c‐myc G‐quadruplexDNA were studied. Complex [PtL1a] (1 a; H2L1a=N,N′‐bis(salicylidene)‐4,5‐methoxy‐1,2‐phenylenediamine) can moderately inhibit c‐myc gene promoter activity in a cell‐free system through stabilizing the G‐quadruplex structure and can inhibit c‐myc oncogene expression in cultured cells. The interaction between 1 a and G‐quadruplexDNA has been
研究了一系列铂(II)Schiff碱基配合物与c - myc G-四链体DNA的相互作用。复合物[PtL 1a ](1 a ; H 2 L 1a = N,N'-双(水杨基)-4,5-甲氧基-1,2-苯二胺)可在无细胞状态下适度抑制c- myc基因启动子活性通过稳定G-四链体结构来抑制该系统,并可以抑制培养细胞中c- myc癌基因的表达。1a已检查了1a和G-四链体DNA之间的相互作用1 H NMR光谱。通过使用基于计算机的基于结构的药物设计进行铅优化,已构建了基于硅的G四联体DNA模型,用于基于对接的虚拟筛选,从而开发出具有改善抑制活性的新型Schiff铂(II)碱基复合物。已鉴定出复合物[PtL 3 ](3 ; H 2 L 3 = N,N'-双4- [1-(2-丙基哌啶)氧基]水杨亚基} -4,5-甲氧基-1,2-苯二胺)在虚拟筛选中得分最高。随后制备了该复合物,并在体外进行了实验测试,以证明其稳定或诱导c
Nickel complexes as efficient catalysts in multicomponent synthesis of tetrahydropyridine derivatives
作者:Andrei N. Yankin、Maksim V. Dmitriev
DOI:10.1080/00397911.2020.1803357
日期:2020.11.16
Abstract Ni(Salen) complexes as an efficient, homogeneous catalysts revealed a catalytic activity toward the one-pot synthesis of tetrahydropyridine derivatives through the pseudo five-component reactions of aromatic aldehydes, aromatic amines, and β-ketoesters in ethanol at room temperature. Mild reaction conditions, good yields, high diastereoseletivity, operational simplicity, and the absence of
Encapsulation of dual cytotoxic and anti-angiogenic gold(iii) complexes by gelatin-acacia microcapsules: In vitro and in vivo studies
作者:Jessie Jing Yan、Raymond Wai-Yin Sun、Peng Wu、Marie C. M. Lin、Albert S.-C. Chan、Chi-Ming Che
DOI:10.1039/c003044a
日期:——
Encapsulation of the anticancer gold(III) complexes bearing porphyrin or Schiff-base ligands by gelatin-acacia microcapsules confers both sustained-release and rapid-release properties, improved solution stability and/or in vivo efficacy compared to that using the unencapsulated complexes alone.
A Highly Selective Colorimetric Chemosensor for Mn<sup>2+</sup>Based on Bis(<i>N</i>-salicylidene)ethylenediamine in Pure Aqueous Solution
作者:Chao Gou、Haiqiang Wu、Sisi Jiang、Chenglin Yi、Jing Luo、Xiaoya Liu
DOI:10.1246/cl.2011.1082
日期:2011.10.5
A novel easily available chemosensor 1 based on bis(N-salicylidene)ethylenediamine was reported, which exhibits highly selective and sensitive recognition toward Mn2+ in pure aqueous solution over a wide range of tested metal ions with a clear naked eye color change from colorless to red. This represents the first reported colorimetric chemosensor capable of detecting Mn2+ in aqueous solution.
A lanthanide salen “square prism” and a wrapped exo-lanthanide salen “double decker”
作者:Yu-Bo Shu、Wei-Sheng Liu
DOI:10.1039/c4dt03959a
日期:——
We succeeded in building a lanthanide salen “square prism” and in wrapping a labile exo-lanthanide salen “double decker” by cuprous cyanide netting. Both lanthanide edifices show near-infrared (NIR) luminescence.