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Síntesis total asimétrica de (-) vinigrol

Long Min¹, Xiaohong Lin¹, Chuang-Chuang Li¹

¹Shenzhen Grubbs Institute and Department of Chemistry , Southern University of Science and Technology , Shenzhen 518055 , China.

Journal of the American Chemical Society

|September 24, 2019

Resumen

Se logró una nueva síntesis asimétrica total de (-) vinigrol utilizando una estrategia libre de grupos protectores. Este enfoque construyó de manera eficiente el núcleo complejo de 1,5-butanodecahidronaftaleno a través de una cascada de cicloadición y contracción de anillos [5+2].

Área de la Ciencia:

Química orgánica
Química sintética

Sus antecedentes:

(-) El vinigrol es un producto natural complejo con una estructura molecular compleja.
Las rutas sintéticas eficientes y escalables son cruciales para acceder a dichos compuestos.

Objetivo del estudio:

Desarrollar una nueva estrategia asimétrica de síntesis total para el (-) vinigrol.
Para construir el núcleo de 1,5-butanodecahidronaftaleno de manera eficiente.

Principales métodos:

Una secuencia sintética lineal de 15 pasos de 3-metil-butanal.
Se utilizó una reacción de cicloadición intramolecular [5+2] de tipo II.
Empleó una cascada de contracción de anillos única para la construcción del núcleo.

Principales resultados:

Se ha logrado una síntesis total asimétrica de (-) vinigrol.
La síntesis no requirió grupos de protección.
Se demostró la eficiencia de la construcción del núcleo de 1,5-butanodecahidronaftaleno.

Conclusiones:

La estrategia desarrollada ofrece una ruta eficiente hacia el (-) vinigrol.
El enfoque sin grupo protector simplifica la síntesis.
Las reacciones clave de cicloadición y cascada son efectivas para construir la estructura del núcleo.

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