New members of the caryophyllene family via biomimetic π-cyclizations and consecutive transformations.
作者:Carsten E Sowa、Ulrike Eggert、H.Martin R Hoffmann
DOI:10.1016/s0040-4020(01)85736-7
日期:1993.1
A series of derivatives from caryophyllene oxide have been prepared in enantiomerically pure form, including bicyclic, tricyclic and tetracyclic sesquiterpenes and sesquiterpenoids. A key intermediate is the unsaturated, chiral (pro 1S,8Z)-bridgehead carbocation 5 and its monobrominated derivative 5a.