185908-93-4Relevant academic research and scientific papers
Synthesis of highly functionalized diaryl ethers by copper-mediated O-arylation of phenols using trivalent arylbismuth reagents
Crifar, Cynthia,Petiot, Pauline,Ahmad, Tabinda,Gagnon, Alexandre
, p. 2755 - 2760 (2014/03/21)
Highly functionalized diaryl ethers were prepared by copper(II) acetate mediated O-arylation reaction of phenols using trivalent organobismuthanes. The reaction is performed under simple conditions and tolerates a wide diversity of functional groups on the phenol and on the organobismuth reagent. Substoichiometric amounts of catalyst can be used by performing the reaction under an oxygen atmosphere. The N-arylation of pyridones is also reported. Highly functionalized diaryl ethers were prepared by a copper(II) acetate mediated O-arylation reaction of phenols using trivalent organobismuthanes (see scheme). The reaction is performed under simple conditions and tolerates a wide diversity of functional groups on the phenol and on the organobismuth reagent. Substoichiometric amounts of catalyst can be used by performing the reaction under an oxygen atmosphere. The N-arylation of pyridones is also reported. FG=functional group.
OXYGEN/NITROGEN HETEROCYCLE INHIBITORS OF TYROSINE PHOSPHATASES
-
Page/Page column 76-77, (2008/06/13)
Compounds, pharmaceutical compositions, and methods for treating, preventing, or ameliorating symptoms associated with diseases such as diabetes, cancer, neurodegenerative diseases, and obesity are provided. The compounds and compositions inhibit protein tyrosine phosphatase enzymes, e.g., PTP-1B.
DERIVATIVES OF THIAZOLE AND THIADIAZOLE INHIBITORS OF TYROSINE PHOSPHATASES
-
Page/Page column 55, (2010/10/20)
Provided herein are compounds and compositions for modulation of tyrosine phosphatase activity. In one embodiment, compounds and compositions for inhibiting protein tyrosine phosphatase activity are provided. In another embodiment, provided herein are compounds and compositions that are useful in the treatment, prevention, or amelioration of one or more symptoms of diseases caused by dysfunctional signal transduction, or in which dysfunctional signal transduction is implicated. In another embodiment, provided herein are compounds and compositions for treatment, prevention, or amelioration of one or more symptoms of diabetes. The compounds have following formulas: (II), (I), (III), and (IV).
BISPHENYL INHIBITORS OF FARNESYLPROTEIN TRANSFERASE
-
, (2008/06/13)
The present invention comprises peptidomimetic compounds which comprise a suitably substituted aminoalkylbenzene and analine analogs, further substituted with a second phenyl ring attached via a bond, a heteroatom linker or an aliphatic linker. The instant compounds inhibit the farnesyl-protein transferase enzyme and the farnesylation of certain proteins. Furthermore, the instant farnesyl protein transferase inhibitors differ from those previously described as inhibitors of farnesyl-protein transferase in that they do not have a thiol moiety. The lack of the thiol offers unique advantages in terms of improved pharmacokinetic behavior in animals, prevention of thiol-dependent chemical reactions, such as rapid autoxidation and disulfide formation with endogenous thiols, and reduced systemic toxicity. Further contained in this invention are chemotherapeutic compositions containing these farnesyl transferase inhibitors and methods for their production
