Two new sesquiterpenoids from the rhizomes of curcuma xanthorrhiza

Abstract

Zedoardiol (1), a new furanoguaiane sesquiterpenoid, and 3,4-dihydroxybisabola-1,10-diene (2), a new naturally occurring bisabolane sesquiterpenoid, together with six known compounds, were isolated from Curcuma xanthorrhiza Roxb. Their structures were determined on the basis of comprehensive spectroscopic analyses, mainly 1D- and 2D-NMR, MS, IR and X-ray single-crystal diffraction. Herein, the isolation and structure elucidation of the compounds are described.