Diastereo‐ and Enantioselective Inverse‐Electron‐Demand Diels–Alder Cycloaddition between 2‐Pyrones and Acyclic Enol Ethers
作者:Guanghao Huang、Régis Guillot、Cyrille Kouklovsky、Boris Maryasin、Aurélien de la Torre
DOI:10.1002/anie.202208185
日期:2022.10.17
The inverse-electron-demand Diels–Alder cycloaddition between 2-pyrones and acyclic enolethers was investigated. Bridged bicyclic lactones were obtained diastereo- and enantioselectively and converted into synthetically relevant polysubstituted enantioenriched cyclohexene and cyclohexadiene derivatives. Mechanistic evidence as well as DFT calculations point towards a stepwise mechanism.
Total Synthesis of Lucidumone: Attempted Shortcuts, Dead Ends and Lessons Learnt
作者:Aurélien de la Torre、Guangho Huang、Amaury Laporte、Lucas Pagès、Cyrille Kouklovsky
DOI:10.1055/s-0042-1751529
日期:2024.5
a meroterpenoid isolated from the mushroom Ganoderma lucidum, displaying selective COX-2 inhibitory activity. In this work, we detail our synthetic efforts which led to the first enantioselective synthesis of lucidumone in 13 steps (longest linear sequence). Beyond the key retro-[4+2]/intramolecular Diels–Alder cascade, we discuss the difficulties regarding fragment assembly, introduction of the methyl