Luminescent double-decker type guanine octets with trivalent lanthanide cations: in situ self-assembling and stability evaluation in homogeneous organic media
摘要:
甲硅烷基化鸟嘌呤在有机介质中与三价镧系元素阳离子(镧系元素阳离子:鸟嘌呤=1:8)形成发光的双层八位组配合物,而脱氨基鸟嘌呤衍生物仅形成1:2配合物。八位组的形成通过特征性 UV/Vis 吸收变化、CSI-TOF MS 和 1H NMR 光谱来证明。通过鸟嘌呤发色团的光激发,具有 Tb3+ 的八位组显示出强烈的绿色发光,并且具有较长的寿命。三价镧系阳离子比常见的一价和二价金属阳离子更有效地稳定八位组。
QSAR Analysis for ADA upon Interaction with a Series of Adenine Derivatives as Inhibitors
作者:A. A. Moosavi‐Movahedi、S. Safarian、G. H. Hakimelahi、G. Ataei、D. Ajloo、S. Panjehpour、S. Riahi、M. F. Mousavi、S. Mardanyan、N. Soltani、A. Khalafi‐Nezhad、H. Sharghi、H. Moghadamnia、A. A. Saboury
DOI:10.1081/ncn-120030719
日期:2004.12.31
presence of adeninederivatives (R1-R24) in sodium phosphate buffer (50 mM; pH 7.5) solution at 27 degrees C. These kinetic parameters were used for QSAR analysis. As such, we found some theoretical descriptors to which the binding affinity of adenosine deaminase (ADA) towards several adenine nucleosides as inhibitors is correlated. QSAR analysis has revealed that binding affinity of the adenine nucleosides
[EN] HEXAMERIC COMPLEXES AND THEIR PREPARATION<br/>[FR] COMPLEXES HEXAMERES ET LEUR PREPARATION
申请人:UNIV MISSOURI
公开号:WO2003033649A2
公开(公告)日:2003-04-24
A composition comprising a guest/host assembly having a spheroidal host assembly comprised of a hexamer of a methylene-bridged trihydroxybenzene tetramer and a guest component encapsulated within the spheroidal host assembly to provide a highly stable guest/host assembly. A guest component, specifically a pharmaceutically active agent, is encapsulated within the spheroidal host assembly to provide a guest/host assembly exhibiting a high stability, being stable upon a solubilization in a mixture of acetone and water in a one-to-one ratio for a period of one day at a temperature of 37 °C. The pharmaceutically active agent encapsulated within the spheroidal hexamer is selected from the group consisting of Depakote, Wellbutrin, Allegra, Neurontin, Zovirax, and Claritin. A process for the preparation of a hexameric complex, as described above, from a methylene-bridged tetramer solubilized in an amphiphilic organic solvent. An activator is incorporated into the amphiphilic solvent containing the tetramer. The activator comprises an organic compound of a lower molecular weight than that of the tetramer which is functionalized with at least one of an acidic group, a halogen, an amino group, an amido group, an ester group, or an hydroxy group. The tetramer may be prepared from an aldehyde and pyrogallol which are reacted under conditions to produce a condensation product of the methylene-bridged cyclic tetramer.