[Structure modification on sesquiterpene lactones from Elephantopus scaber].
In order to look for lower toxic and strongly active compounds, the structure of sesquiterpene lactones from Elephantopus scaber was modified. Deoxyelephantopin and scabertopin were isolated from the whole plant of Elephantopus scaber and hydrogenated and epoxidated. Five sesquiterpenoide derivatives were prepared and their structures were identified by IR, NMR and MS spectra analysis. Four sesquiterpenoides are new compounds. Part of the compounds show definite antitumor activity.
Liang
Qiao-li
QL
Nanjing University of Chinese Medicine, Nanjing 210046, China. liangqiaoli@sohu.com
Min
Zhi-da
ZD
D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D019659:Asteraceae / Q000737:chemistry; D006367:HeLa Cells; D006801:Humans; D006865:Hydrogenation; D007783:Lactones / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D015394:Molecular Structure; D010946:Plants, Medicinal / Q000737:chemistry; D012717:Sesquiterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D013729:Terpenes / Q000737:chemistry / Q000494:pharmacology
D000972:Antineoplastic Agents, Phytogenic; D007783:Lactones; D012717:Sesquiterpenes; D013729:Terpenes; C528427:deoxyelephantopin; C045728:elephantopin