Versatile Strategy to Access Tricycles Related to Quassinoids and Triterpenes
摘要:
The reactivity of two new bicyclic cyclohexenones (13 and 27) with several Nazarov reagents is presented. A flexible synthetic strategy is developed and provides access to highly substituted tricycles related to quassinoids and triterpenes.
A full account of our anionic polycyclization approach to accesshighlyfunctionalizedtricycles related to quassinoids and terpenoids from several optically active bicyclic enone systems and Nazarov reagents is presented. (+)-Carvone is the only chiral source used to fix the entire stereochemistry of all of the tricycles, and the stereochemical outcome of this process was unambiguously determined
Versatile Strategy to Access Tricycles Related to Quassinoids and Triterpenes
作者:Pierre-Yves Caron、Pierre Deslongchamps
DOI:10.1021/ol902711b
日期:2010.2.5
The reactivity of two new bicyclic cyclohexenones (13 and 27) with several Nazarov reagents is presented. A flexible synthetic strategy is developed and provides access to highly substituted tricycles related to quassinoids and triterpenes.