Site-selective C–H bond carbonylation with CO<sub>2</sub> and cobalt-catalysis
作者:Nagaraju Barsu、Deepti Kalsi、Basker Sundararaju
DOI:10.1039/c8cy02060d
日期:——
in situ-produced CO gas for C–Hbondcarbonylation using earth-abundant cobalt catalysts. The ease of handling CO2 gas at atmospheric pressure allows us to prepare 13C labelled compounds which are otherwise difficult to achieve. The procedure developed makes it possible to utilize CO2 as a CO source, which can be widely applied as a C1 synthon that can be incorporated between C–H and N–H bonds of aromatic
Cobalt catalyzed electrochemical [4 + 2] annulation for the synthesis of sultams
作者:Yangmin Cao、Yong Yuan、Yueping Lin、Xiaomei Jiang、Yaqing Weng、Tangwei Wang、Faxiang Bu、Li Zeng、Aiwen Lei
DOI:10.1039/d0gc00289e
日期:——
Cobalt catalyzed electrochemical [4 + 2] annulation of sulfonamides with alkynes is demonstrated in this work, which provided a practical and environmentally friendly way to synthesize structurally diverse sultams.
In this studysynthesis and β-glucuronidase inhibitory potential of 3/5/8 sulfonamide and 8-sulfonate derivatives of quinoline (1–40) are discussed. Studies reveal that all the synthetic compounds were found to have good inhibitory activity against β-glucuronidase. Nonetheless, compounds 1, 2, 5, 13, and 22–24 having IC50 values in the range of 1.60–8.40 μM showed superior activity than the standard
Rh(<scp>ii</scp>)-catalyzed branch-selective C–H alkylation of aryl sulfonamides with vinylsilanes
作者:Supriya Rej、Naoto Chatani
DOI:10.1039/c9sc04308j
日期:——
Rhodium(II)-catalyzed unusual branch-selective ortho-C–H alkylation of aryl sulfonamides with vinylsilanes was achieved using an 8-aminoquinoline directing group. Notably, the para-substituted aryl sulfonamides gave mono-(branched)alkylated products exclusively without the formation of any double C–H alkylated byproducts. The results of deuterium labeling experiments suggest that both hydrometalation
使用 8-氨基喹啉导向基团,在铑 ( II ) 催化下,芳基磺酰胺与乙烯基硅烷发生异常支链选择性邻-C–H 烷基化反应。值得注意的是,对位取代的芳基磺酰胺仅产生单(支链)烷基化产物,而没有形成任何双C-H烷基化副产物。氘标记实验的结果表明,加氢金属化和碳金属化途径都参与了这种转化。
Discovery of novel sulphonamide hybrids that inhibit LSD1 against bladder cancer cells
作者:Jia Liu、Xingwang Zhu、Liu Yu、Minghuan Mao
DOI:10.1080/14756366.2021.2014830
日期:2022.12.31
respectively. Compound L8 as a selective and reversible LSD1inhibitor could inhibitLSD1 with the IC50 value of 60 nM. It effectively inhibited LSD1 by increasing the expression levels of H3K4me1, H3K4me2, and H3K9me2 in HT1376 cells. To the best of our knowledge, this was the first report which showed that sulphonamide–quinoline–dithiocarbamate hybrids potently inhibited LSD1 in bladder cancer cells. Our