title: Cytotoxic oxygenated triterpenoid saponins from Symplocos chinensis.
abstract: A n-butanol-soluble fraction of an ethanolic extract from the roots of Symplocos chinensis showed cytotoxic activity against several cancer cell lines. Bioassay-guided purification led to the isolation and characterization of eight new triterpenoid saponins, symplocososides L-S (1-8). The structures of 1-8 were elucidated as glycosides based on oxygenated aglycons by spectroscopic and chemical methods. These compounds and their hydrolytic products, along with some additional analogues obtained earlier from S. chinensis roots, were evaluated for cytotoxicity in a small cancer cell panel.
authors.affiliation: Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Chinese Academy of Medical Sciences and Peking Union Medical College, No. 1 Xiannongtan Street, Beijing 100050, People's Republic of China.
authors.forename: Guangmiao
authors.initials: G
authors.lastname: Fu
authors.forename: Yue
authors.initials: Y
authors.lastname: Liu
authors.forename: Shishan
authors.initials: S
authors.lastname: Yu
authors.forename: Xiangzhong
authors.initials: X
authors.lastname: Huang
authors.forename: Youcai
authors.initials: Y
authors.lastname: Hu
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Chen
authors.forename: Furong
authors.initials: F
authors.lastname: Zhang
mesh_terms: D000972:Antineoplastic Agents, Phytogenic / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D004354:Drug Screening Assays, Antitumor; D004365:Drugs, Chinese Herbal / Q000737:chemistry / Q000302:isolation & purification* / Q000494:pharmacology; D006801:Humans; D019684:Magnoliopsida / Q000737:chemistry*; D015394:Molecular Structure; D010100:Oxygen / Q000737:chemistry; D018517:Plant Roots / Q000737:chemistry; D010946:Plants, Medicinal / Q000737:chemistry*; D012503:Saponins / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology; D013329:Structure-Activity Relationship; D014315:Triterpenes / Q000737:chemistry / Q000302:isolation & purification / Q000494:pharmacology
chemical_list: D000972:Antineoplastic Agents, Phytogenic; D004365:Drugs, Chinese Herbal; D012503:Saponins; D014315:Triterpenes; D010100:Oxygen