The present invention provides an erythropoietin expression-enhancing agent that can cancel the suppression of erythropoietin production or promote erythropoietin production, and a therapeutic or preventive drug for anemia, a liver function-improving agent, an ischemic injury-improving agent, a renal protective agent, and an insulin secretagogue comprising the erythropoietin expression-enhancing agent. The erythropoietin expression-enhancing agent of the present invention comprises one or more compounds selected from the group consisting of compounds represented by the following general formulas (I), (II), and (III) and pharmaceutically acceptable salts thereof when R
3
is OH.
A divergent synthesis of modular dendrimers via sequential C–C bond fragmentation thio-Michael addition
作者:Judith Hierold、Angus Gray-Weale、David W. Lupton
DOI:10.1039/c0cc02289f
日期:——
The CâC bond fragmentation of carbocycles has been developed as a new method for the divergent synthesis of dendrimers. The scope of this reaction was examined with the preparation of six first generation dendrimers from structurally diverse and readily available fragmentation precursors. By pairing the fragmentation with a thio-Michael reaction, the preparation of a [G4]-ene24 dendrimer has been achieved.
HIV-1 X4 Activities of Polycationic “Viologen” Based Dendrimers by Interaction with the Chemokine Receptor CXCR4: Study of Structure–Activity Relationship
作者:Simona Asaftei、Dana Huskens、Dominique Schols
DOI:10.1021/jm301337y
日期:2012.12.13
and/or on the host cell receptors required for entry. The increasing positive character of dendrimers leads to more cytotoxicity. The 10 charges dendrimers (1, 6) have less influence on the cell viability but low inhibition of the binding of the CXCR4 mAb clone 1D9. Thus, dendrimers with 18 charges (2, 7) are the most promising CXCR4 imaging probes. We report the design, synthesis, and biological activity
“Viologen” Dendrimers as Antiviral Agents: The Effect of Charge Number and Distance
作者:Simona Asaftei、Erik De Clercq
DOI:10.1021/jm100093p
日期:2010.5.13
A series of “viologen” derivatives (4,4′-bipyridinium salts) carrying between 1 and 90 charges per molecule have been prepared and investigated for their activity against human immunodeficiency virus (HIV), herpes simplex virus (HSV), vesicular stomatitis, Punta Toro virus, Sindbis virus, Reovirus, and respiratory syncytial viruses. In general, most of the compounds showed good activities against HIV-1
Shell-by-Shell Inside-Out Complexation of Organic Anions in Flexible and Rigid Pyridinium Dendrimers
作者:Murugavel Kathiresan、Lorenz Walder
DOI:10.1021/ma201615w
日期:2011.11.8
flexible pyridinium and rigid bipyridinium (=viologen) dendrimers were prepared. The cationic charges are persistent and equally distributed all through the dendrimers. The dendrimers are filled with monoanionic (benzenesulfonate (BS)), dianionic (anthraquinone disulfonate (AQDS), naphthalene disulfonate (NDS)), and trianionic (pyranine (Pyr)) guest molecules in a stepwise inside-out, shell-by-shell fashion
制备了聚阳离子柔性吡啶鎓和刚性联吡啶(=紫罗兰)树状聚合物。阳离子电荷是持久性的,并且在整个树枝状聚合物中均等分布。树枝状聚合物由内向外逐壳地由单阴离子(苯磺酸盐(BS)),双阴离子(蒽醌二磺酸盐(AQDS),萘二磺酸盐(NDS))和三阴离子(吡喃(吡喃))客体分子填充。时尚。每个树状聚合物亚壳的总阳离子电荷除以客体阴离子的电荷定义了相应壳的最大客体容量。这些数字在1中显示为“魔术数字”1 H NMR滴定。因此,从内到外的复杂情况的证明是基于最里面的树枝状壳的顺序出现,然后是中间和最后一个最外面的树枝状壳的顺序出现。尺寸匹配的阴离子在亚壳当量点显示最锐利的1 Hδ跃迁,表明除了简单的电荷相互作用外,分子识别也起着重要的作用。通过电化学技术进一步探测了第0代树状聚合物的终点,得到K > 10×10 3 M –1最后一个来宾分子。从简单的基于MM +的MD计算确定了由内而外填充的两个原因,即(