Your browser doesn't support javascript.
loading
Mostrar: 20 | 50 | 100
Resultados 1 - 4 de 4
Filtrar
Más filtros










Base de datos
Intervalo de año de publicación
1.
Mod Rheumatol Case Rep ; 5(1): 36-39, 2021 01.
Artículo en Inglés | MEDLINE | ID: mdl-32731788

RESUMEN

A 71-year-old Japanese female with psoriatic arthritis (PsA) was admitted for fever and neck pain. Her medication had been switched from secukinumab, an interleukin (IL)-17A inhibitor, to adalimumab, a tumour necrosis factor (TNF)-α inhibitor, due to secondary failure for PsA. She was diagnosed with subacute thyroiditis (SAT) on the basis of thyroid hormone levels and thyroid ultrasound findings. Her SAT symptoms improved with prednisolone administration (15 mg/day). Following the administration of ixekizumab, an IL-17A inhibitor, her PsA improved without SAT relapse. SAT mechanism associated with TNF inhibitors remains unknown, but cytokine imbalance may be involved.


Asunto(s)
Antirreumáticos/efectos adversos , Artritis Psoriásica/tratamiento farmacológico , Tiroiditis Subaguda/etiología , Adalimumab , Anciano , Anticuerpos Monoclonales Humanizados , Antirreumáticos/uso terapéutico , Artritis Psoriásica/complicaciones , Femenino , Humanos , Interleucina-17/antagonistas & inhibidores , Pruebas de Función de la Tiroides , Glándula Tiroides/fisiopatología , Tiroiditis Subaguda/sangre , Tiroiditis Subaguda/fisiopatología , Tirotropina/sangre , Tiroxina/sangre , Triyodotironina/sangre , Inhibidores del Factor de Necrosis Tumoral/uso terapéutico
4.
J Org Chem ; 75(2): 334-41, 2010 Jan 15.
Artículo en Inglés | MEDLINE | ID: mdl-20000351

RESUMEN

We have succeeded in the development of three approaches to the synthesis of aromatic compounds from 1,3-dicarbonyl compounds and alkynes. The first approach is a manganese-catalyzed [2+2+2] cycloaddition between 1,3-dicarbonyl compounds, which have no substituents at the active methylene moiety, and terminal alkynes. This reaction proceeds with high regioselectivity when aryl acetylenes are employed as the alkyne component. The second approach is a rhenium- or manganese-catalyzed formal [2+1+2+1] cycloaddition between beta-keto esters and two kinds of alkynes. In this reaction, the aromatic compounds are obtained by the following reaction sequence: (1) insertion of the first alkyne into a carbon-carbon single bond of a beta-keto ester, (2) formation of 2-pyranones via intramolecular cyclization with the elimination of ethanol, and (3) Diels-Alder reaction between the formed 2-pyranone and the second alkyne. This reaction provides multisubstituted aromatic compounds in a regioselective manner. The third approach is a rhenium-catalyzed formal [2+2+1+1] cycloaddition reaction from two 1,3-diketones and one alkyne. In this reaction, the aromatic skeleton is constructed from three carbons of the first 1,3-diketone, two carbons of the alkyne, and one carbon of the second 1,3-diketone.


Asunto(s)
Alquinos/química , Hidrocarburos Aromáticos/síntesis química , Cetonas/química , Manganeso/química , Renio/química , Catálisis , Ciclización , Hidrocarburos Aromáticos/química , Modelos Moleculares , Estereoisomerismo
SELECCIÓN DE REFERENCIAS
DETALLE DE LA BÚSQUEDA
...