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A Murine Model of Irreversible and Reversible Unilateral Ureteric Obstruction
Published on: December 20, 2014
La familia de uril cucurbita invertida es la familia de uril cucurbita invertida
Lyle Isaacs1, Sang-Kyu Park, Simin Liu
1Department of Chemistry and Biochemistry, University of Maryland, College Park, Maryland 20742, USA. LIsaacs@umd.edu
Journal of the American Chemical Society
|December 22, 2005
Resumen
Los investigadores aislaron y caracterizaron los cucurbiturilos invertidos (iCB[n]), revelando su papel como intermediarios en la formación de cucurbiturilo y propiedades únicas de reconocimiento debido a su momento dipolo.
Área de la Ciencia:
- Química supramolecular de las moléculas.
- Química orgánica es la química orgánica.
Sus antecedentes:
- Los cucurbituriles (CB[n]) son moléculas macrocíclicas de huésped con diversas aplicaciones.
- Comprender el mecanismo de formación y las propiedades de CB[n] es crucial para su desarrollo.
Objetivo del estudio:
- Para aislar y caracterizar los nuevos diastereómeros de los cucurbituriles, específicamente los cucurbituriles invertidos (iCB[6] y iCB[7]).
- Investigar el papel de estos cucurbiturilos invertidos en el mecanismo general de la formación de CB[n].
- Para explorar las propiedades únicas y los comportamientos de reconocimiento conferidos por la unidad invertida de glicoluril.
Principales métodos:
- Aislamiento y caracterización de iCB[6] e iCB[7] utilizando técnicas espectroscópicas y analíticas.
- Experimentos de reenvío de productos para aclarar el papel mecanicista de iCB[n].
- Evaluación del comportamiento de reconocimiento y las propiedades de la cavidad de iCB[n] en comparación con sus diastereómeros.
Principales resultados:
- Aislamiento y caracterización exitosos de iCB[6] e iCB[7], diastereómeros de CB[6] y CB[7] con una sola unidad de glicoluril invertida.
- Los experimentos de reenvío de productos confirmaron que el CB[n] invertido es un intermediario clave en la formación de CB[n].
- Los cucurbiturilos invertidos exhiben un momento dipolo permanente, son ligeramente más pequeños que sus diastereómeros y muestran una distinta selectividad de huéspedes.
- La estructura invertida permite a iCB[n] informar directamente sobre el contenido de su cavidad hidrofóbica.
Conclusiones:
- El descubrimiento de los cucurbiturilos invertidos proporciona información crítica sobre el mecanismo de síntesis del cucurbiturilo.
- Las propiedades estructurales y electrónicas únicas de iCB[n] abren nuevas vías para las aplicaciones de química y detección de anfitrión-invitado.
- iCB[n] representan una nueva clase de anfitriones macrocíclicos con capacidades de reconocimiento sintonizables.
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