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Total syntheses of ent-hypocoprin A and ent-hypocoprin B

This study reports the stereoselective total syntheses of the antipodes of the unique 3/10 bicyclic skeletal sesquiterpenoids, namely, hypocoprin A and hypocoprin B. The synthesis involved conjugate addition accelerated by trimethylsilyl chloride, construction of the ten-membered ring via the intram...

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Detalles Bibliográficos
Autores principales: Ota, Koichiro, Watanabe, Taiki, Igarashi, Shuntaro, Okazaki, Shinnosuke, Kamaike, Kazuo, Miyaoka, Hiroaki
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9169068/
https://www.ncbi.nlm.nih.gov/pubmed/35754888
http://dx.doi.org/10.1039/d2ra02891c
Descripción
Sumario:This study reports the stereoselective total syntheses of the antipodes of the unique 3/10 bicyclic skeletal sesquiterpenoids, namely, hypocoprin A and hypocoprin B. The synthesis involved conjugate addition accelerated by trimethylsilyl chloride, construction of the ten-membered ring via the intramolecular S(N)2 reaction promoted by 1,8-diazabicyclo[5.4.0]undec-7-ene, and osmium-mediated π-facial selective dihydroxylation to functionalize the 1,1-disubstituted alkene.