A new flavonoid with chalcone skeleton was isolated from the dried aerial roots of Ficus microcarpa. The structure of the compound was elucidated on the basis of spectral methods including 1D and 2D NMR. The new compo...A new flavonoid with chalcone skeleton was isolated from the dried aerial roots of Ficus microcarpa. The structure of the compound was elucidated on the basis of spectral methods including 1D and 2D NMR. The new compound showed weak inhibitory effect on nitric oxide production and cytotoxicity against K562 and PC3 cells.展开更多
The structures of three new eremophilanolides isolated from the roots of Ligularia Veitchiana were shown,by the spectral and chemical evidences,to be 1β,10β-epoxy-6β- hydrox-y-8β-methoxy-eremophil-7(11)-en-12,8α-...The structures of three new eremophilanolides isolated from the roots of Ligularia Veitchiana were shown,by the spectral and chemical evidences,to be 1β,10β-epoxy-6β- hydrox-y-8β-methoxy-eremophil-7(11)-en-12,8α-olide(3),1β,10β-epoxy-6β- (2'-hydroxymethylacryloyloxy)-8β-methoxy-eremophil-7(11)-en-12,8α-olide (4)and 1β,10β-epoxy-6β-(2'-methoxymethylacryloyloxy)-8β-hydroxy-eremophil -7(11)-en-12,8α-olide(5).展开更多
基金the Department of Science & Technology of Shandong Province(No.2007BS02005)the Visiting Project of the Department of Education of Shandong Province,China(2008)for financial support.
文摘A new flavonoid with chalcone skeleton was isolated from the dried aerial roots of Ficus microcarpa. The structure of the compound was elucidated on the basis of spectral methods including 1D and 2D NMR. The new compound showed weak inhibitory effect on nitric oxide production and cytotoxicity against K562 and PC3 cells.
基金The Natural Science Foundation of China and the doctoral programme from State Education Commission of China.
文摘The structures of three new eremophilanolides isolated from the roots of Ligularia Veitchiana were shown,by the spectral and chemical evidences,to be 1β,10β-epoxy-6β- hydrox-y-8β-methoxy-eremophil-7(11)-en-12,8α-olide(3),1β,10β-epoxy-6β- (2'-hydroxymethylacryloyloxy)-8β-methoxy-eremophil-7(11)-en-12,8α-olide (4)and 1β,10β-epoxy-6β-(2'-methoxymethylacryloyloxy)-8β-hydroxy-eremophil -7(11)-en-12,8α-olide(5).
