Quadruplex-Interactive Agents as Telomerase Inhibitors: Synthesis of Porphyrins and Structure−Activity Relationship for the Inhibition of Telomerase
作者:Dong-Fang Shi、Richard T. Wheelhouse、Daekyu Sun、Laurence H. Hurley
DOI:10.1021/jm010246u
日期:2001.12.1
The cationicporphyrin 5,10,15,20-tetra-(N-methyl-4-pyridyl)porphyrin (TMPyP4) binds to quadruplexDNA and is thereby an inhibitor of human telomerase (Wheelhouse et al. J. Am. Chem. Soc. 1998, 120, 3261-3262). Herein the synthesis and telomerase-inhibiting activity of a wide range of analogues of TMPyP4 are reported, from which rules for a structure-activity relationship (SAR) have been discerned:
2-Pyrrolylthiones as Monoanionic Bidentate N,S-Chelators: Synthesis and Molecular Structure of 2-Pyrrolylthionato Complexes of Nickel(II), Cobalt(III), and Mercury(II)
作者:Christian Brückner、Steven J. Rettig、David Dolphin
DOI:10.1021/ic0004636
日期:2000.12.1
although di-2-pyrrolyl thione (6) could theoretically also achieve chelation through an N,N-donor set. A square planar Ni(II) complex, 14, an octahedral Co(III) complex, 18, and a tetrahedral Hg(II) complex, 17, with the di-2-pyrrolyl thionato chelate have been prepared, and their structures have been characterized by 1H NMR, UV-vis, MS, IR, elemental analysis, and single-crystal X-ray diffraction. Crystal
A new synthetic route to donor–acceptor porphyrins
作者:M.John Plater、Stuart Aiken、Grant Bourhill
DOI:10.1016/s0040-4020(02)00109-6
日期:2002.3
Some new donor–acceptor porphyrins have been prepared based on a metallated bis(ethynyl) porphyrin core. 4-(Dimethylamino)phenyl was used as the donor group and 4-nitrophenyl, 4-cyanophenyl and 5-nitrothiazoyl as the acceptor groups. Dipyrrylmethane was used for large scale porphyrin ring synthesis because the absence of methylene substituents reduces the difficulty of substituent scrambling that occurs
diffraction. The thiomethyl groups in 6a–6c are close to be coplanar to the flat ringsystem, the strain due to the interaction of methyl with the hydrogen at C1 is released by shifting of the sulfur atom away from carbon C1 and opening of the angle C8–S-methyl. This coplanarity of the thiomethyl group with ringsystem agrees with the preference of the syn conformation of methyl vinyl thioether. In
anthracene and fluorescein moieties. In stark contrast, a boron dipyrromethene (BODIPY) and AP dyad produces two‐color‐emissive aggregates through the formation of an intermolecular charge‐transfer (CT) complex between the electron‐rich anthracene and electron‐deficient BODIPY moieties. Furthermore, to our surprise, the BODIPY and AP dyad aggregates generate singlet oxygen (1O2) and photocytotoxicity upon excitation
单体结构单元的组装可以显示新特性的显示,包括光学,机械和电化学功能。在这项研究中,我们试图开发一种功能性的荧光团自组装体,该团簇仅在聚集时才能产生活性氧。由于蒽与荧光素部分之间的分子间相互作用较弱,因此带有蒽亚苯基(AP)基团的带负电荷和中性的荧光素单元在水溶液中形成非荧光H-聚集体。与之形成鲜明对比的是,硼二吡咯亚甲基(BODIPY)和AP二聚体通过在富电子的蒽与缺电子的BODIPY部分之间形成分子间电荷转移(CT)复合物而产生双色发射聚集体。此外,令我们惊讶的是,1 O 2)和激发时的光细胞毒性,表明BODIPY-蒽CT状态有利于系统间杂交。根据X射线晶体学分析,确定了BODIPY和AP部分之间的晶格状分子堆积,以实现空前的聚集诱导1 O 2生成(AISG)。