Abstract: The ¹³C NMR spectra of curcumol and curdione, which are active components for antitumor in the Chinese herbal medicine, curcuma aromatia silisb, as well as acetyl and epoxy derivatives of curcumol were recorded, and the spectral lines were ossigned. By NMR and other techniques the molecular structure of an artificial modified product of curcumol CM-I was determined. It is a new derivative of cycloheptatrienyl ketone with Strong physiological activity.