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Síntesis asimétrica de A-240610.0 a través de un nuevo enfoque atropselectivo para biarilos axialmente quirales con
Yi-Yin Ku1, Tim Grieme, Prasad Raje
1D-R450, Process Chemistry, Global Pharmaceutical Research and Development, Abbott Laboratories, North Chicago, Illinois 60064-4000, USA. yiyin.ku@abbott.com
Journal of the American Chemical Society
|April 19, 2002
Resumen
Los investigadores desarrollaron un nuevo método para la síntesis atroposelectiva de biarilo utilizando la transferencia de quiralidad. Esta técnica produce eficientemente un solo atropisómero, lo que permite la síntesis asimétrica de A-240610.0.0.
Área de la Ciencia:
- Química orgánica es la química orgánica.
- Síntesis asimétrica de síntesis.
Sus antecedentes:
- Los biarilos axialmente quirales son importantes motivos estructurales en productos farmacéuticos y materiales.
- Desarrollar métodos eficientes para su síntesis estereoselectiva sigue siendo un desafío.
Objetivo del estudio:
- Desarrollar un nuevo método atroposelectivo para la preparación de biarilos axialmente quirales.
- Para lograr una alta estereoselectividad y rendimiento en la síntesis de un atropisómero específico.
- Para aplicar esta metodología a la síntesis asimétrica de A-240610.0.0.
Principales métodos:
- La quiralidad se transfiere de un centro estereogénico de alcohol secundario al eje biarílico.
- Migración de grupo silílico intramolecular regioselectiva.
- Aislamiento y caracterización del atropisómero objetivo.
Principales resultados:
- Desarrollo exitoso de un nuevo método de preparación atroposelectiva de biarilo.
- Preparación de un solo atropisómero (2) con un rendimiento del 85% y una diastereoselectividad de 99:1.
- Se logró una síntesis asimétrica eficiente de A-240610.0.
Conclusiones:
- El método desarrollado proporciona una ruta eficiente a los atropisómeros con alto estereocontrol.
- Este enfoque facilita la síntesis de moléculas complejas como la A-240610.0.0.
- La estrategia de transferencia de quiralidad es una herramienta valiosa en la síntesis asimétrica.
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