New Atglistatin closely related analogues: Synthesis and structure-activity relationship towards adipose triglyceride lipase inhibition
作者:Pierre-Philippe Roy、Kenneth D'Souza、Miroslava Cuperlovic-Culf、Petra C. Kienesberger、Mohamed Touaibia
DOI:10.1016/j.ejmech.2016.04.021
日期:2016.8
Adipose TriglycerideLipase (ATGL) performs the first and rate-limiting step in lipolysis by hydrolyzing triacylglycerols stored in lipid droplets to diacylglycerols. By mediating lipolysis in adipose and non-adipose tissues, ATGL is a major regulator of overall energy metabolism and plasma lipid levels. Since chronically high levels of plasma lipids are linked to metabolic disorders including insulin
Rh(III)-Catalyzed Chemoselective C–H Alkenylation and [5 + 1] Annulation with <i>Gem</i>-Difluoromethylene Enabled by the Distinctive Fluorine Effect
作者:Jian Yang、Wendi Shi、Weijie Chen、Hui Gao、Zhi Zhou、Wei Yi
DOI:10.1021/acs.joc.1c01012
日期:2021.7.16
by the distinctive fluorine effect to provide the different coordination mode of the Rh(III) catalyst binding to the directing group, thereby giving the direct access to difluorinated 2-alkenyl arylureas and 3,4-dihydroquinazolin-2(1H)-ones bearing both an α-quaternary carbon center and a monofluoroalkenyl moiety with broad substrate compatibility and good functional group tolerance. The synthetic application
作者:Shuo-Jie Shen、Zhen Zhang、Yi Gu、Cheng-Hao Gu、Xu Yang、Hua-Jin Xu、Yi Hu
DOI:10.1039/d2ob02026b
日期:——
Here, we developed an air-stable, earth-abundant cobalt(III)-catalyzed regioselective mono-olefination of arenes directed by urea under mild conditions through a cross-dehydrogenativecoupling (CDC) process. Under the optimized conditions, a high regioselectivity of mono-olefination was achieved with various electron-rich and electron-deficient arenes, which afforded E-alkenylated products (with yields
在这里,我们开发了一种在温和条件下通过交叉脱氢偶联 (CDC) 过程在空气中稳定的、地球丰富的钴 ( III ) 催化的芳烃区域选择性单烯化反应。在优化条件下,各种富电子和缺电子芳烃实现了单烯化的高区域选择性,得到了E-烯基化产物(收率高达 90%)。与用于弱配位基团指导的贵金属催化烯化的条件相比,我们的反应在温和的条件下进行,包括温和的温度(40°C)和非金属氧化剂。
Chemodivergent Couplings of <i>N</i>-Arylureas and Methyleneoxetanones via Rh(III)-Catalyzed and Solvent-Controlled C–H Activation
作者:Guoxun Zhu、Wendi Shi、Hui Gao、Zhi Zhou、Huacan Song、Wei Yi
DOI:10.1021/acs.orglett.9b01333
日期:2019.6.7
The efficient couplings of diverse N-arylureas and methyleneoxetanones have been realized via Rh(III)-catalyzed and solvent-controlled chemoselective C-H functionalization, which involved the tunable beta-H elimination and beta-O elimination processes, thereby giving divergent access to quinolin-2(1H)-ones and ortho-allylated N-arylureas with broad substrate compatibility and good functional group tolerance. the divergent synthetic utilities of the transformations have also been exemplified by subsequently tandem C-H allylation, unsymmetrical C-H functionalization, alternative reaction mode, as well as removal of the carbamoyl group.
Merging C–H Activation and Alkene Difunctionalization at Room Temperature: A Palladium-Catalyzed Divergent Synthesis of Indoles and Indolines
作者:Manash Kumar Manna、Asik Hossian、Ranjan Jana
DOI:10.1021/ol5036968
日期:2015.2.6
A palladium-catalyzed 1,2-carboamination through C–H activation at room temperature is reported for the synthesis of 2-arylindoles, and indolines from readily available, inexpensive aryl ureas and vinyl arenes. The reaction initiates with a urea-directed electrophilic ortho palladation, alkene insertion, and β-hydride elimination sequences to provide the Fujiwara–Moritani arylation product. Subsequently