Metal-Free <i>ortho</i>-Selective C–H Borylation of 2-Phenylthiopyridines Using BBr<sub>3</sub>
作者:Gaorong Wu、Binghan Pang、Yangyang Wang、Li Yan、Lu Chen、Tao Ma、Yafei Ji
DOI:10.1021/acs.joc.1c00520
日期:2021.4.16
2-phenylthiopyridines using BBr3 as the boron source under metal-free conditions has been reported. The reaction exhibited site exclusivity, and the synthesized aryl boronates were freely converted to various useful intermediates. Thus, this facile method would be beneficial to synthesize structurally diversified phenylthioethers derivatives and other materials containing boron-nitrogen coordination.
Modulation of cAMP-Specific PDE without Emetogenic Activity: New Sulfide-Like PDE7 Inhibitors
作者:Ana M. García、José Brea、Jose A. Morales-García、Daniel I. Perez、Alejandro González、Sandra Alonso-Gil、Irene Gracia-Rubio、Clara Ros-Simó、Santiago Conde、María Isabel Cadavid、María Isabel Loza、Ana Perez-Castillo、Olga Valverde、Ana Martinez、Carmen Gil
DOI:10.1021/jm501090m
日期:2014.10.23
A forward chemical genetic approach was followed to discover new targets and lead compounds for Parkinson's disease (PD) treatment. By analysis of the cell protection produced by some small molecules, a diphenyl sulfide compound was revealed to be a new phosphodiesterase 7 (PDE7) inhibitor and identified as a new hit. This result allows us to confirm the utility of PDE7 inhibitors as a potential pharmacological treatment of PD. On the basis of these data, a diverse family of diphenyl sulfides has been developed and pharmacologically evaluated in the present work. Moreover, to gain insight into the safety of PDE7 inhibitors for human chronic treatment, we evaluated the new compounds in a surrogate emesis model, showing nonemetic effects.
Modifiable Sulfur Tethers as Directing Groups for Aromatic CH Acetoxylation Reactions
作者:Heinrich Richter、Stephan Beckendorf、Olga García Mancheño
DOI:10.1002/adsc.201000941
日期:2011.2.11
A designed new class of modifiable sulfur tethers for aromatic CH bond functionalizations is presented. As a model, the palladium-catalyzed directed acetoxylation reaction was studied. The more challenging sulfoxide tethers were the most effective in this transformation, showing a broad functionality tolerance, high S oxido-redox stability and no catalyst poisoning. Preliminary mechanistic studies
Intramolecular C−H Activation as an Easy Toolbox to Synthesize Pyridine‐Fused Bipolar Hosts for Blue Organic Light‐Emitting Diodes
作者:Fei Wang、Luoqiang Zhang、Weiguo Han、Zhengyang Bin、Jingsong You
DOI:10.1002/anie.202205380
日期:2022.8.8
Iridium-catalyzed intramolecular oxidative C−H/C−H coupling reactions have been developed to rapidly build a library of structurally and functionallydiverse benzoheteroaromatic-fused pyridine skeletons. This new synthetic strategy allowed to explore and highlight the high performance of bipolar host materials for blue OLEDs.