Total synthesis of bisabolane sesquiterpenoids, α-bisabol-1-one, curcumene, curcuphenol and elvirol: utility of catalytic enamine reaction in cyclohexenone synthesis

Abstract

Total syntheses of α-bisabol-1-one, curcumene, curcuphenol and elvirol have been accomplished via 1,4-conjugate addition of intact aldehydes to vinyl ketones followed by an intramolecular aldol condensation.