title: Steroidal saponins from Smilax china and their anti-inflammatory activities.
abstract: Steroidal saponins, 1, 2, 3 and 4, were isolated from the BuOH extract of Smilax china L., along with 13 known compounds, 5-17. Their structures were elucidated on the basis of MS, 1D and 2D NMR spectroscopic analyses and chemical evidence. In the bioassay tests, all compounds showed inhibitory effects on cyclooxygenase-2 enzyme (COX-2) activities at final concentration of 10(-5) M, and only compound 5 showed an inhibitory effect on production of TNFalpha (tumor necrosis factor alpha) in murine peritoneal macrophages at the same concentration.
authors.affiliation: The State Key Laboratory of Natural and Biomimetic Drugs, School of Pharmaceutical Sciences, Peking University, Beijing 100083, PR China.
authors.forename: Bo
authors.initials: B
authors.lastname: Shao
authors.forename: Hongzhu
authors.initials: H
authors.lastname: Guo
authors.forename: Yajun
authors.initials: Y
authors.lastname: Cui
authors.forename: Min
authors.initials: M
authors.lastname: Ye
authors.forename: Jian
authors.initials: J
authors.lastname: Han
authors.forename: Dean
authors.initials: D
authors.lastname: Guo
mesh_terms: D000893:Anti-Inflammatory Agents / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology*; D002240:Carbohydrate Sequence; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2 / Q000378:metabolism; D052246:Cyclooxygenase 2 Inhibitors / Q000494:pharmacology; D016861:Cyclooxygenase Inhibitors / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D007700:Kinetics; D009682:Magnetic Resonance Spectroscopy; D008958:Models, Molecular; D035261:Plant Components, Aerial / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D012503:Saponins / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology; D032281:Smilax / Q000737:chemistry*; D013256:Steroids / Q000737:chemistry* / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000893:Anti-Inflammatory Agents; D052246:Cyclooxygenase 2 Inhibitors; D016861:Cyclooxygenase Inhibitors; D012503:Saponins; D013256:Steroids; D051545:Cyclooxygenase 1; D051546:Cyclooxygenase 2