Unusual α-Methylation of Alkoxyaryl Ketones with Higher Order Methyl Cuprate and Lithium Bromide
作者:Michael E. Jung、Byoung Suk Lee
DOI:10.1021/jo0011540
日期:2000.12.1
Efficient synthesis of a hexasubstituted aromatic ring via an intramolecular Michael-aldol process: preparation of a late tricyclic intermediate for the synthesis of pseudopterosin A
作者:Michael E. Jung、Christopher S. Siedem
DOI:10.1021/ja00062a077
日期:1993.5
to the tricyclic pseudopterosin skeleton having been r e p ~ r t e d . ~ We report here an unusual approach to the substituted phenalene ring system, in which a two-step process for hexasubstituted aromatic ring formation is used, namely an intramolecular Michael addition of an electron-rich furan onto a cyclohexenone followed by an aldol condensation to generate efficiently a late tricyclic intermediate