Chemo- and Regioselective Organo-Photoredox Catalyzed Hydroformylation of Styrenes via a Radical Pathway
作者:He Huang、Chenguang Yu、Yueteng Zhang、Yongqiang Zhang、Patrick S. Mariano、Wei Wang
DOI:10.1021/jacs.7b05082
日期:2017.7.26
Importantly, under the optimized reaction conditions the benzylic radical formed in this manner is reduced by SET from the anion radical of 4CzIPN to generate a benzylic anion. Finally, protonation produces the hydroformylation product. By using the new protocol, aldehydes can be generated regioselectively in up to 90% yield. A broad array of functional groups is tolerated in the process, which takes place
Novel Propargyl-Linked Bisubstrate Analogues as Tight-Binding Inhibitors for Nicotinamide <i>N</i>-Methyltransferase
作者:Dongxing Chen、Linjie Li、Krystal Diaz、Iredia D. Iyamu、Ravi Yadav、Nicholas Noinaj、Rong Huang
DOI:10.1021/acs.jmedchem.9b01255
日期:2019.12.12
NicotinamideN-methyltransferase (NNMT) catalyzes the methyl transfer from the cofactor S-adenosylmethionine to nicotinamide and other pyridine-containing compounds. NNMT is an important regulator for nicotinamide metabolism and methylation potential. Aberrant expression levels of NNMT have been implicated in cancer, metabolic, and neurodegenerative diseases, which makes NNMT a potential therapeutic
(EN) The present invention provides compounds of formula (I) in which R is as defined in the specification, or a pharmaceutically acceptable metabolically labile ester or amide thereof, or a pharmaceutically acceptable salt thereof, which are useful as antagonists of one or more of the actions of L-glutamate at metabotropic excitatory amino acid receptors.(FR) Cette invention concerne des composés de formule (I), dans laquelle R est tel que défini dans le descriptif, ou un ester ou amide pharmaceutiquement acceptable de ces composés qui est métaboliquement labile, ou encore un sel pharmaceutiquement acceptable de ces composés, qu'on utilise comme antagonistes d'une ou de plusieurs actions du L-glutamate au niveau des récepteurs d'acides aminés excitateurs métabotropiques.
Disclosed are compounds having the formula:
wherein X
1
, X
2
, X
3
, R
1
, R
2
, R
3
, R
4
, Y, A, Z, L and n are as defined herein, and methods of making and using the same.
Photoexcited Ni<sup>II</sup>–Aryl Complex-Mediated Giese Reaction of Aryl Bromides
作者:Xian-Chen He、Ke-Rong Li、Jie Gao、Jian-Ping Guan、Hong-Bin Chen、Hao-Yue Xiang、Kai Chen、Hua Yang
DOI:10.1021/acs.orglett.3c01219
日期:2023.6.9
Giese reaction of aryl bromides with electron-deficient alkenes was developed, enabled by a dual catalyst system containing NiII complex and IrIII photocatalyst. This protocol could accommodate a variety of aryl bromides and electron-deficient alkenes, delivering the conjugate adducts in up to 97% yield. The utilization of photoexcited (dtbbpy)NiII(aryl)Br intermediate as an aryl radical source allows
开发了芳基溴化物与缺电子烯烃的 Giese 反应,该反应由包含 Ni II络合物和 Ir III光催化剂的双催化剂体系实现。该协议可以容纳各种芳基溴化物和缺电子烯烃,以高达 97% 的产率提供共轭加合物。利用光激发的 (dtbbpy)Ni II (芳基)Br 中间体作为芳基自由基源,可以实现芳基卤化物的这种新型转化,从而扩大激发镍催化的化学空间。