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Síntesis total de Ganoaplanina habilitada por una cascada de reacción de adición radical / aldol
Nicolas Müller1, Ondřej Kováč1,2, Alexander Rode1
1Department of Organic Chemistry and Center for Molecular Biosciences, University of Innsbruck, 6020 Innsbruck, Austria.
Journal of the American Chemical Society
|August 7, 2024
Resumen
Los investigadores informan de la primera síntesis total de ganoaplanina, un meroterpenoide que inhibe los canales de calcio de tipo T. Esta molécula compleja se ensambló utilizando una nueva estrategia convergente, destacando los avances en la química orgánica sintética.
Área de la Ciencia:
- Química orgánica
- Química medicinal
- Síntesis de productos naturales
Sus antecedentes:
- La Ganoaplanina es un meroterpenoide que se encuentra en las especies de Ganoderma.
- Muestra actividad inhibidora contra los canales de calcio de tipo T.
- La estructura compleja presenta un desafío sintético significativo.
Objetivo del estudio:
- Para lograr la primera síntesis total de ganoaplanina.
- Desarrollar una estrategia sintética eficiente y convergente.
- Explorar nuevas metodologías para la construcción de productos naturales complejos.
Principales métodos:
- Síntesis convergente utilizando un andamio policetídeo y un fragmento terpenóide cíclico.
- Diastereoselectiva, iodolactonización mediada por titanio para la construcción de estereocentros.
- Una estrategia de acoplamiento de dos componentes que implica la adición radical y la reacción de aldol para la fusión de fragmentos y la formación de enlaces biarílicos.
- Oxidación en etapa tardía para instalar las funcionalidades de oxígeno y el spiro bisacetal.
Principales resultados:
- El éxito de la síntesis total de ganoaplanina.
- Construcción eficiente de tres estereocentros contiguos, incluidos dos cuaternarios.
- Desarrollo de una nueva estrategia para la formación de enlaces biarílicos y el acoplamiento de fragmentos.
- Instalación estereoselectiva de la porción característica de espiro bisacetal.
Conclusiones:
- La síntesis reportada proporciona una vía viable para la ganoaplanina y sus análogos relacionados.
- Las metodologías sintéticas desarrolladas pueden aplicarse a otros productos naturales complejos.
- Este trabajo avanza en el campo de la síntesis total y ofrece potencial para los esfuerzos de descubrimiento de fármacos dirigidos a los canales de calcio.
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