AHMED, AHMED A.;JAKUPOVIC, J.;BOHLMANN, F.;REGAILA, H. A.;AHMED, A. M., PHYTOCHEMISTRY, 29,(1990) N, C. 2211-2215
作者:AHMED, AHMED A.、JAKUPOVIC, J.、BOHLMANN, F.、REGAILA, H. A.、AHMED, A. M.
DOI:——
日期:——
Sesquiterpene lactones from Xanthium pungens
作者:Ahmed A. Ahmed、J. Jakupovic、F. Bohlmann、H.A. Regaila、A.M. Ahmed
DOI:10.1016/0031-9422(90)83040-8
日期:1990.1
in addition to several known sesquiterpenelactones and some other compounds, a lactone with a newcarbonskeleton, two dimeric sesquiterpenelactones, an endoperoxide, an 11,13-dihydroxanthanolide and a further sesquiterpene acid. The structures were elucidated by highfield NMR techniques. The structure of the pentacyclic lactone was confirmed by partial synthesis from 8-epixanthatin.