Formal Synthesis of Berkelic Acid: A Lesson in α-Alkylation Chemistry
作者:Michael C. McLeod、Zoe E. Wilson、Margaret A. Brimble
DOI:10.1021/jo201988m
日期:2012.1.6
The full details of our enantioselective formal synthesis of the biologicallyactive natural product berkelic acid are described. The insertion of the C-18 methyl group proved challenging, with three different approaches investigated to install the correct stereochemistry. Our initial Horner–Wadsworth–Emmons/oxa-Michael approach to the berkelic acid core proved unsuccessful upon translation to the