New bisabolane sesquiterpenoids from the rhizomes of curcuma xanthorrhiza (zingiberaceae)

Abstract

Three new bisabolane sesquiterpenoids, bisacurone (1), bisacumol (2) and bisacurol (3), and one kown compound. curlone (4), were isolated from the rhizomes of Curcuma xanthorrhiza (Zingiberaceae). The absolute structures of these new compounds were determined by spectroscopy, chemical conversions and the exciton chirality method for allylic alcohols. © 1989, The Pharmaceutical Society of Japan. All rights reserved.