Arylation of Phenols. Convenient, Regiospecific Methods for Mono- or Bis-<i>p</i>-fluorophenylations, Suitable for Large Scale Syntheses
作者:Heiner Jendralla、Li-Jian Chen
DOI:10.1055/s-1990-27028
日期:——
Phenols have been arylated by a palladium(0)-catalyzed coupling reaction. Two methods were used: a Grignard reagent of a protected phenol component 2 was coupled with a haloarene, or an umpolung (reversed reactivity) where unprotected phenolic halides 6 were coupled with aryl Grignard reagents. Bis-arylation and regiospecific ortho-, meta- and para-arylations were achieved. Aryl-aryl couplings were insensitive to steric hindrance in the Grignard component, but were inhibited by sulfur-containing substituents in the phenolic component. A thiocyanate substituted biaryl was used to synthesize arylated phenols with various sulfur functionalities.
JENDRALLA, HEINER;CHEN, LI-JIAN, SYNTHESIS (BRD),(1990) N, C. 827-833
作者:JENDRALLA, HEINER、CHEN, LI-JIAN
DOI:——
日期:——
Synthesis, Biological Evaluation and Molecular Modeling of GW 501516 Analogues
作者:Calin C. Ciocoiu、Aina W. Ravna、Ingebrigt Sylte、Trond Vidar Hansen
DOI:10.1002/ardp.201000189
日期:2010.11
Eleven analogues of GW501516 (1) were prepared and subjected to biological testing in a semi‐high throughput human skeletal muscle cell assay. The assay testing indicated that all analogues elicited oxidation of oleic acid. Among the most potent agonists, 2e (2‐2‐ethyl‐4‐[(4‐methyl‐2‐(4‐trifluoromethylphenyl)thiazol‐5‐yl)methylthio]phenoxy}‐2‐methylpropanoic acid), was also subjected to a luciferase‐based