Synthesis and preliminary in vitro biological evaluation of new carbon-11-labeled celecoxib derivatives as candidate PET tracers for imaging of COX-2 expression in cancer
作者:Mingzhang Gao、Min Wang、Kathy D. Miller、Qi-Huang Zheng
DOI:10.1016/j.ejmech.2011.05.024
日期:2011.9
The enzyme cyclooxygenase-2 (COX-2) is overexpressed in a variety of malignant tumors. This study was designed to develop newradiotracers for imaging of COX-2 in cancer using biomedical imaging technique positron emission tomography (PET). Carbon-11-labeled celecoxib derivatives, [11C]4a–c and [11C]8a–d, were prepared by O-[11C] methylation of their corresponding precursors using [11C]CH3OTf under
Nitrooxymethyl-Substituted Analogues of Celecoxib: Synthesis and Pharmacological Characterization
作者:Donatella Boschi、Loretta Lazzarato、Barbara Rolando、Andrea Filieri、Clara Cena、Antonella Di Stilo、Roberta Fruttero、Alberto Gasco
DOI:10.1002/cbdv.200800307
日期:2009.3
Nitrooxymethyl-substitutedanalogues of celecoxib were synthesized and tested for their cyclooxygenase (COX)-inhibiting, vasodilator, and anti-aggregatory activities, as well as for their metabolic stability in human serum and whole blood. The results showed their potency and selectivity in inhibiting the COX isoforms, evaluated in whole human blood, as well as their anti-aggregatory activity to depend
Pairing Iron and Nickel Catalysis for Electrochemical Esterification of Aryl Halides with Carbazates
作者:Peng Xue、Liubo Li、Niankai Fu
DOI:10.1021/acs.orglett.2c03034
日期:2022.10.21
for esterification of aryl halides by pairing iron and nickel electrocatalysis. The reaction involves anodically iron-catalyzed oxidation of carbazates to produce alkoxycarbonyl radicals. The carbon-centered radicals then enter nickel catalysis that is powered by cathodic reduction to deliver the radical coupling products. Mechanistic data are consistent with arylnickel(II) species as the key intermediates
我们报告了一种通过配对铁和镍电催化来酯化芳基卤化物的电催化方法。该反应涉及阳极铁催化的氨基甲酸酯氧化以产生烷氧羰基自由基。然后,以碳为中心的自由基进入由阴极还原驱动的镍催化,以提供自由基偶联产物。机械数据与芳基镍 (II) 物种一致,它们是能够形成所需碳-碳键的关键中间体。
Design, synthesis and biological evaluation of novel hydroxamic acid based histone deacetylase 6 selective inhibitors bearing phenylpyrazol scaffold as surface recognition motif
strategy for the treatment of cancer and HDAC6 inhibitors were considered to be potent anti-cancer agents. In this work, celecoxib showed moderate degree of HDAC6 inhibition activity and selectivity in preliminary enzyme inhibition activity assay. A series of hydroxamic acid derivatives bearing phenylpyrazol moiety were designed and synthesized as HDAC6 inhibitors. Most compounds showed potent HDAC6 inhibition