69358-20-9Relevant academic research and scientific papers
Modeling of the 5′-deiodination of thyroxine by iodothyronine deiodinase: Chemical corroboration of a selenenyl iodide intermediate
Goto, Kei,Sonoda, Daiju,Shimada, Keiichi,Sase, Shohei,Kawashima, Takayuki
supporting information; experimental part, p. 545 - 547 (2010/04/06)
(Figure Presented) What makes a good cavity? A molecular cavity enabled the stabilization of a selenenyl iodide (RSel) intermediate formed in 5'-deiodination of a thyroxine derivative by an organoselenol (see scheme). The chemical processes proposed for the iodothyronine deiodinase catalytic cycle were experimentally established.
Pd-catalyzed alkyl to aryl migration and cyclization: An efficient synthesis of fused polycycles via multiple C-H activation
Huang, Qinhua,Fazio, Alessia,Dai, Guangxiu,Campo, Marino A.,Larock, Richard C.
, p. 7460 - 7461 (2007/10/03)
A novel palladium migration methodology for the synthesis of complex fused polycycles has been developed. This process involves 1,4-palladium alkyl to aryl migrations via through-space C-H activation, followed by intramolecular arylation or an intermolecu
Novel amines as histamine-3 receptor ligands and their therapeutic applications
-
, (2008/06/13)
Compounds of formula (I) or a pharmaceutically acceptable salts or prodrug thereof which are useful for the modulation of the histamine-3 receptors in mammals and which are useful for the treatment of disorders ameliorated by histamine-3 receptor ligands.
Structure-activity relationship of new growth inhibitors of Trypanosoma cruzi
Cinque, Güendalina M.,Szajnman, Sergio H.,Zhong, Li,Docampo, Roberto,Schvartzapel, Andrea J.,Rodriguez, Juan B.,Gros, Eduardo G.
, p. 1540 - 1554 (2007/10/03)
Several drugs bearing the 4-phenoxyphenoxy skeleton and other closely related structures were designed, synthesized, and evaluated as antiproliferative agents against Trypanosoma cruzi, the etiologic agent of Chagas' disease. The new class of drugs was envisioned by modifying the nonpolar 4-phenoxyphenoxy moiety replacing selected aromatic protons by different groups via electrophilic aromatic substitution reactions as well as introducing a sulfur atom at file polar extreme. Of the designed compounds, sulfur-containing derivatives were shown to be potent antireplicative agents against T. cruzi. Among these drugs, 4-phenoxyphenoxyethyl thiocyanate (compound 56) proved to be an extremely active growth inhibitor of the epimastigote forms of T. cruzi and displayed an IC500 of 2.2 μM. Under the same assay conditions, this drug was much more active than Nifurtimox, one of the drugs currently in clinical use to control this disease. This thiocyanate derivative was also a very active inhibitor against the intracellular form of the parasite at the nanomolar level. Other sulfur derivatives prepared also exhibited very potent antiproliferative action against T. cruzi. The presence of a sulfur atom at the polar extreme for this family of compounds seems to be very important for biological action because this atom was always associated with high inhibition values. 4-Phenoxyphenoxyethyl thiocyanate presents very good prospective not only as a lead drug but also as a potential chemotherapeutic agent.
Iodothyronine Deiodinase Mimics. Deiodination of o,o'-Diiodophenols by Selenium and Tellurium Reagents
Vasil'ev, Andrei A.,Engman, Lars
, p. 3911 - 3917 (2007/10/03)
To better understand, and in the extension mimic, the action of the three selenium-containing iodothyronine deiodinases, o,o'-diiodophenols were reacted under acidic conditions with sodium hydrogen telluride, benzenetellurol, sodium hydrogen selenide, or benzeneselenol and under basic conditions with the corresponding deprotonated reagents. Sodium hydrogen telluride was found to selectively remove one iodine from a variety of 4-substituted o,o'-diiodophenols, including a protected form of thyroxine (T4). Thus, it mimics the D1 variety of the iodothyronine deiodinases. Sodium telluride was a more reactive deiodinating agent toward o,o'-diiodophenols, often causing removal of both halogens. Benzenetellurol and sodium benzenetellurolate sometimes showed useful selectivity for monodeiodination. However, the products were often contaminated by small amounts of organotellurium compounds. Sodium hydrogen selenide, sodium selenide, benzeneselenol, and sodium benzeneselenolate were essentially unreactive toward o,o'-diiodophenols. To gain more insight into thyroxine inner-ring deiodination, substituted 2,6-diiodophenyl methyl ethers were treated with some of the chalcogen reagents. Reactivity and selectivity for monodeiodination varied considerably depending on the substituents attached to the aromatic nucleus. In general, it was possible to find reagents that could bring about the selective mono- or dideiodination of these substrates.
