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Construcción enantioselectiva de estereocentros cuaternarios remotos y enantioselectivos

Tian-Sheng Mei¹, Harshkumar H Patel¹, Matthew S Sigman¹

¹Department of Chemistry, The University of Utah, 315 South, 1400 East, Salt Lake City, Utah 84112, USA.

|April 11, 2014

Resumen

Este estudio introduce un nuevo método catalítico para crear moléculas complejas con estereocentros cuaternarios de todo carbono. La reacción enantioselectiva de tipo Heck permite la síntesis de valiosos componentes farmacéuticos.

Área de la Ciencia:

Química orgánica es la química orgánica.
Química sintética de la química sintética.
La estereoquímica es la estereoquímica.

Sus antecedentes:

Los estereocentros cuaternarios de todo carbono son motivos estructurales cruciales en productos naturales y productos farmacéuticos.
La síntesis enantioselectiva de estos centros, especialmente los remotos, presenta un desafío significativo en la química orgánica.

Objetivo del estudio:

Desarrollar un nuevo método catalítico y enantioselectivo para la construcción de estereocentros cuaternarios de todo carbono.
Proporcionar acceso directo a diversos bloques de construcción moleculares que contienen centros cuaternarios enriquecidos enantioméricamente.

Principales métodos:

Se empleó una reacción de tipo Heck intermolecular catalítica y enantioselectiva.
La reacción involucró tres alcoholes alquenilo sustituidos y ácidos aril borónicos.

Principales resultados:

El método sintetizó con éxito compuestos cuaternarios de aril carbonilo sustituidos por carbono.
La reacción demostró la preservación de los estereocentros preexistentes a lo largo de la cadena de alquilo.
Se accedió a diversos bloques de construcción moleculares con centros cuaternarios enriquecidos enantioméricamente.

Conclusiones:

Se ha establecido un nuevo y eficiente método para sintetizar estereocentros cuaternarios enriquecidos enantioméricamente.
Este enfoque ofrece una herramienta valiosa para acceder a moléculas complejas relevantes para la química medicinal y la síntesis de productos naturales.

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