(α-Fe2O3)-MCM-41 as a magnetically recoverable nanocatalyst for the synthesis of pyrazolo[4,3-c]pyridines at room temperature
摘要:
MCM-41 embedded magnetic nanoparticles which was prepared through the formation of MCM-41 in the presence of Fe3O4 nanoparticles has been used as a magnetically recoverable catalyst for the synthesis of new series of pyrazolo[3,4-c]pyridine derivatives. This catalyst with 10 wt.% of loaded iron oxide nanoparticles was highly recyclable (up to 5 times), and was easily recovered from the reaction mixture using an external magnet without loss of activity. The prepared magnetic catalyst is characterized by X-ray powder diffraction (XRD), transmission electron microscopy (TEM), Fourier transform infrared (FT-IR), nitrogen physisorption measurements, and acid-base titration. (C) 2012 Elsevier B.V. All rights reserved.
Synthesis and molecular modeling studies of indole-based antitumor agents
作者:Riham F. George、Siva S. Panda、El-Sayed M. Shalaby、Aladdin M. Srour、I. S. Ahmed Farag、Adel S. Girgis
DOI:10.1039/c6ra07061b
日期:——
3-dipolar cycloaddition reaction of 1-alkyl-3,5-bis(arylidene)-4-piperidones 11–25 with azomethine ylides (generated by the condensation of isatins 26–28 with sarcosine 29). The single crystal X-ray studies of 46 and 48 supported the regio- and stereoselectivity of the reaction. Most of the synthesized spiro-indoles exhibited potent antitumor properties against the HeLa (cervical cancer) cell line through
Synthesis, Antiproliferative, and Multidrug Resistance Reversal Activities of Heterocyclic<i>α</i>,<i>β</i>-Unsaturated Carbonyl Compounds
作者:Ju-feng Sun、Gui-ge Hou、Feng Zhao、Wei Cong、Hong-juan Li、Wen-shuai Liu、Chunhua Wang
DOI:10.1111/cbdd.12777
日期:2016.10
and compounds 3a‐3d with 4‐trifluoro methyl in the arylidene benzene rings were the most potent, since their IC50 values are between 0.06 and 3.09 μm against all cancer cell lines employed. Meanwhile, their multidrug resistance reversal properties and cellular uptake were further examined. The data displayed that all of these compounds could reverse multidrug resistance, particularly, compounds 3a and
Fibroblastgrowthfactorreceptor1 (FGFR1) is considered a therapeutic target for multiple cancers, including gastric cancer. FGFR1inhibitors, being ATP competitors, can prevent the kinase domain and the downstream signaling cascade from phosphorylation and thus have the potential to treat cancers associated with aberrant FGFR1 activation. However, untargeted inhibition may cause numerous side effects
6-naphthyridines and pyrano[3,2-c]pyridines were selectively synthesized via microwave-assisted reactions controlled by the nature of the solvent. This has resulted in an efficient and promising synthetic method for constructing the 1,6-naphthyridine and pyrano[3,2-c]pyridine skeletons. solvent-dependent chemoselectivity - 1,6-naphthyridines - pyrano[3,2-c]pyridines
通过受溶剂性质控制的微波辅助反应,有选择地合成了一系列的1,6-萘啶和吡喃并[3,2- c ]吡啶。这导致了一种有效且有前途的合成方法,用于构建1,6-萘吡啶和吡喃并[3,2- c ]吡啶骨架。 溶剂依赖性化学选择性-1,6-萘吡啶-吡喃并[3,2- c ]吡啶