Structure and Absolute Configuration of Campherenone and Campherenol, Sesquiterpenoids of Cinnamomum camphora

Abstract

From camphor blue oil, the high boiling fraction of the essential oil of camphor tree, Cinnamomum camphora (Lauraceae), new sesquiterpenic ketone and alcohol, campherenone and campherenol, have been isolated. Both terpenoids can be interconverted by reductionoxidation reactions. The physico-chemical properties of these substances and their derivatives and their transformation into β-santalene have established their stereostructures as I and II, respectively.