Hagiwara, H.; Okabe, T.; Ono, H.; Kamat, V.P.; Hoshi, T.; Toshio Suzuki, T.; Ando, M.
(Journal of Chemical Society, Perkin Transactions. 1; 2002; 895-900.)
Total syntheses of alpha-bisabol-l-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.