DBN has been identified as an efficient reagent for promoting the dehydrogenative/decarboxylative aromatization of tetrahydro-β-carbolines under air atmosphere, to access the corresponding β-carbolines in moderate to good yields. The utility of this protocol for the gram-scale synthesis of β-carboline alkaloids eudistomin U (7) and harmane (10) has also been demonstrated.
Design and synthesis of β-carboline and combretastatin derivatives as anti-neutrophilic inflammatory agents
作者:Sunil Kumar、Yi-Hsuan Wang、Po-Jen Chen、Yu-Chia Chang、Hemant K. Kashyap、Ya-Ching Shen、Huang-Ping Yu、Tsong-Long Hwang
DOI:10.1016/j.bioorg.2021.104846
日期:2021.6
A series of β-carbolinederivatives was synthesized by the Pictet-Spengler reaction with or without the combretastatin skeleton. The structures of these derivatives were elucidated by spectroscopic techniques. All synthesized compounds were evaluated for their anti-inflammatory activity in human neutrophils. Among them, two compounds, NTU-228 and HK-72, showed significant inhibitory effects on N-formyl-Met-Leu-Phe
Feasibility of Developing Radiotracers for MDM2: Synthesis and Preliminary Evaluation of an 18F-Labeled Analogue of the MDM2 Inhibitor SP-141
作者:Satish K. Chitneni、Zhengyuan Zhou、Brian E. Watts、Michael R. Zalutsky
DOI:10.3390/ph14040358
日期:——
with fluorine-18 (18F) using 18F-fluorethyl bromide to provide [18F]1 and evaluated in vitro and in vivo. SPR analysis confirmed the binding of the fluorinated analogues to MDM2 at 1.25–20 µM concentrations. Cell uptake studies revealed high uptake (67.5–71.4 %/mg protein) and specificity of [18F]1 in MCF7 and HepG2 cells. The uptake of [18F]1 in these cells could be modulated using 100 µM SP-141, potentially
Biophysical Survey of Small-Molecule β-Catenin Inhibitors: A Cautionary Tale
作者:Michael A. McCoy、Dominique Spicer、Neil Wells、Kurt Hoogewijs、Marc Fiedler、Matthias G. J. Baud
DOI:10.1021/acs.jmedchem.2c00228
日期:2022.5.26
critical role in human physiology, and its dysregulation can lead to an array of diseases. β-Catenin is a multifunctional protein within this pathway and an attractive yet challenging therapeutic target, most notably in oncology. This has stimulated the search for potent small-molecule inhibitors binding directly to the β-catenin surface to inhibit its protein–protein interactions and downstream signaling