title: Triterpenoid saponins from Ardisia gigantifolia.
abstract: Four new triterpenoid saponins (1-4) were isolated from the rhizome of Ardisia gigantifolia STAPF. The structures of new saponins were established as 3beta-o-alpha-L-rhamnopyranosyl-(1-->3)-[beta-D-xylopyranosyl-(1-->2)]-beta-D-glucopyranosyl-(1-->4)-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl-16alpha-hydroxy-13,28-epoxy-oleanane (1), 3beta-o-alpha-L-rhamnopyranosyl-(1-->3)-[beta-D-xylopyranosyl-(1-->2)]-beta-D-glucopyranosyl-(1-->4)-[beta-D-glucopyrano-syl-(1-->2)]-alpha-L-arabinopyranosyl-16alpha-hydroxy-13,28-epoxy-30-acetoxy-oleanane (2), 3beta-o-alpha-L-rhamnopyranosyl-(1-->3)-[beta-D-glucopyranosyl-(1-->4)-beta-D-xylopyranosyl-(1-->2)]-beta-D-glucopyranosyl-(1-->4)-[beta-D-glucopyranosyl-(1-->2)]-alpha-L-arabinopyranosyl-16alpha-hydroxy-13,28-epoxy-oleanane (3) and 3beta-o-alpha-L-rhamnopyranosyl-(1-->3)-[beta-D-xylopyranosyl-(1-->2)]-beta-D-glucopyranosyl-(1-->4)-[beta-D-6-O-acetylglucopranosyl-(1-->2)]-alpha-L-arabinopyranosyl-16alpha-hydroxy-13,28-epoxy-oleanane (4) were isolated from Ardisia gigantifolia STAPF. Their structures were elucidated by means of (1)H- and (13)C-NMR spectroscopic studies, including 2D-NMR technique. The cytotoxic activities of saponins 1-4 are reported against three human cancer cell lines, namely, Hela human cervical carcinoma cells, EJ human bladder tumor cells, and BCG-823 human gastric carcinoma cells.
authors.affiliation: Department of Clinical Pharmacology, General Hospital of PLA, Beijing 100853, China.
authors.forename: Li-Hua
authors.initials: LH
authors.lastname: Mu
authors.forename: Qiang-Qiang
authors.initials: QQ
authors.lastname: Gong
authors.forename: Hai-Xia
authors.initials: HX
authors.lastname: Zhao
authors.forename: Ping
authors.initials: P
authors.lastname: Liu
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D031644:Ardisia / Q000737:chemistry*; D045744:Cell Line, Tumor; D002470:Cell Survival / Q000187:drug effects; D006367:HeLa Cells; D006801:Humans; D009682:Magnetic Resonance Spectroscopy; D015394:Molecular Structure; D009369:Neoplasms / Q000188:drug therapy; D027343:Rhizome / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*; D014315:Triterpenes / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology*
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D012503:Saponins; D014315:Triterpenes