THE STEREOSTRUCTURE OF WENJINE AND RELATED (1S__-, 10S__-), (4S__-, 5S__-)-GERMACRONE-1(10), 4-DIEPOXIDE ISOLATED FROM CURCUMA WENYUJIN

Abstract

A novel superoxidized sesquiterpenoid named wenjine (1) and germacrone diepoxide (2) with the germacrone epoxide (3) were isolated from the essential oil of the air-dried rhizoma of Curcuma wenyujin. The sterostructure of 1__- was determined on the basis of its spectral data and X-ray diffraction. The absolute stucture of 2__- was also elucidated based on the spectral data and the transformation from 3__-.