Air- and Light-Stable <i>S</i>-(Difluoromethyl)sulfonium Salts: <i>C</i>-Selective Electrophilic Difluoromethylation of β-Ketoesters and Malonates
作者:Sheng-Le Lu、Xin Li、Wen-Bing Qin、Jian-Jian Liu、Yi-Yong Huang、Henry N. C. Wong、Guo-Kai Liu
DOI:10.1021/acs.orglett.8b03067
日期:2018.11.2
Air- and light-stable electrophilic difluoromethylating reagents, S-(difluoromethyl)-S-phenyl-S-(2,4,6-trialkoxyphenyl) sulfonium salts were successfully developed, and the introduction of intramolecular hydrogen bonds plays a crucial role for the stabilities and reactivities of these reagents. C-selective difluoromethylation of a broad range of β-ketoesters and malonates proceeded smoothly under mild
Biocatalytic dynamic kinetic reductive resolution with ketoreductase from <i>Klebsiella pneumoniae</i>: the asymmetric synthesis of functionalized tetrahydropyrans
作者:Rasmita Barik、Joydev Halder、Samik Nanda
DOI:10.1039/c9ob01681c
日期:——
substituted-β-ketoesters to the corresponding β-hydroxy esters with excellent yields and stereoselectivities (ee and de >99 %). The reactions described herein followed a biocatalytic dynamickineticreductiveresolution (DKRR) pathway, which is reported for the first time with such substrates. It was found that the enzyme system can accept substituted mono-aryl rings with different electronic natures
Alkynylation of heterocyclic compounds using hypervalent iodine reagent
作者:M. Kamlar、I. Císařová、J. Veselý
DOI:10.1039/c4ob02625j
日期:——
The alkynylation of various nitrogen- and/or sulphur-containing heterocyclic compounds using hypervalent iodine TMS-EBX by utilization of tertiary amines under mild conditions is described.
描述了利用三级胺在温和条件下利用高价碘TMS-EBX对各种含氮和/或硫杂环化合物进行炔基化的过程。
Development of coumarine derivatives as potent anti-filovirus entry inhibitors targeting viral glycoprotein
作者:Yinyi Gao、Han Cheng、Sameer Khan、Gaokeng Xiao、Lijun Rong、Chuan Bai
DOI:10.1016/j.ejmech.2020.112595
日期:2020.10
the substitution groups of C3 and C4 of coumarin should be relatively large hydrophobic groups and 3) the linker part should be least substituted. Based on the SAR analysis, we synthesized compound 32 as a potent entry inhibitor of EBOV and MARV (IC50 = 0.5 μM for EBOV and 1.5 μM for MARV). The mutation studies of Ebola glycoprotein and molecular docking studies showed that the coumarin and its substituted
[EN] 4H- [1, 2, 4] TRIAZOLO [5, 1 -B] PYRIMIDIN-7 -ONE DERIVATIVES AS CCR2B RECEPTOR ANTAGONISTS<br/>[FR] DÉRIVÉS DE 4H-[1,2,4]TRIAZOLO[5,1-B]PYRIMIDIN-7-ONE À TITRE D'ANTAGONISTES DES RÉCEPTEURS CCR2B
申请人:ASTRAZENECA AB
公开号:WO2011114148A1
公开(公告)日:2011-09-22
The present invention relates to novel compounds for use in the compositions, to processes for their preparation, to intermediates useful in their preparation and to their use as therapeutic agents. The present invention also relates to pharmaceutical compositions, which comprise compounds that act via antagonism of the CCR2b receptor for which MCP-1 is one of the known ligands and so may be used to treat inflammatory disease, atherosclerosis, diabetes, obesity, cancer, chronic obstructive pulmonary disease (COPD) rheumatoid arthritis and/or neuropathic pain, which is mediated by these receptors.