Ligand-Controlled Chemoselective C(acyl)–O Bond vs C(aryl)–C Bond Activation of Aromatic Esters in Nickel Catalyzed C(sp<sup>2</sup>)–C(sp<sup>3</sup>) Cross-Couplings
converted into the alkylated arenes and ketone products, respectively. The utility of this newly developed protocol was demonstrated by its wide substrate scope, broad functional group tolerance and application in the synthesis of keyintermediates for the synthesis of bioactive compounds. DFT studies on the oxidative addition step helped rationalizing this intriguing reaction chemoselectivity: whereas
The present disclosure is generally directed to antiviral compounds, and more specifically directed to combinations of compounds which can inhibit the function of the NS5A protein encoded by Hepatitis C virus (HCV), compositions comprising such combinations, and methods for inhibiting the function of the NS5A protein.
[EN] DIMETHOXYPHENYL SUBSTITUTED INDOLE COMPOUNDS AS TLR7, TLR8 OR TLR9 INHIBITORS<br/>[FR] COMPOSÉS D'INDOLE SUBSTITUÉS PAR DU DIMÉTHOXYPHÉNYLE COMME DES INHIBITEURS DE TLR7, TLR8 OU TLR9
申请人:BRISTOL MYERS SQUIBB CO
公开号:WO2018026620A1
公开(公告)日:2018-02-08
Disclosed are compounds of Formula (I) or a salt thereof, wherein R1, R3, R4, R5, m, and n are defined herein. Also disclosed are methods of using such compounds as inhibitors of signaling through Toll-like receptor 7, or 8, or 9, and pharmaceutical compositions comprising such compounds. These compounds are useful in treating inflammatory and autoimmune diseases.
Chemoselective deoxygenation of ether-substituted alcohols and carbonyl compounds by B(C<sub>6</sub>F<sub>5</sub>)<sub>3</sub>-catalyzed reduction with (HMe<sub>2</sub>SiCH<sub>2</sub>)<sub>2</sub>
作者:Wenyu Yang、Lu Gao、Ji Lu、Zhenlei Song
DOI:10.1039/c8cc01163j
日期:——
B(C6F5)3-catalyzed deoxygenation of ether-substituted alcohols and carbonylcompounds has been developed using (HMe2SiCH2)2 as the reductant. This unique reagent shows distinct superiority over traditional one silicon-centered hydrosilanes, giving the corresponding alkanes in high yields with good tolerance of ethers, aryl halides and alkenes. The control experiments suggest that (HMe2SiCH2)2 might
使用(HMe 2 SiCH 2)2作为还原剂,开发了B(C 6 F 5)3催化的醚取代的醇和羰基化合物的脱氧反应。这种独特的试剂显示出优于传统的以硅为中心的氢硅烷的独特优势,可高收率地提供相应的烷烃,并对醚,芳基卤化物和烯烃具有良好的耐受性。对照实验表明(HMe 2 SiCH 2)2可能以分子内Si / O活化方式促进该方法。