title: Bioactive triterpenoids from Symplocos chinensis.
abstract: A new triterpenoid, 2beta,3beta,19alpha,24-tetrahydroxy-23-norurs-12-en-28-oic acid (4), together with three known triterpenoids 3-oxo-19alpha,23,24-trihydroxyurs-12-en-28-oic acid (1), 2alpha,3beta,19alpha,23-tetrahydroxyurs-12-en-28-oic acid (2), 2alpha,3alpha,19alpha,23-tetrahydroxyurs-12-en-28-oic acid (3), was isolated from the roots of Symplocos chinensis. The new triterpenoid shows significant cytotoxic activity against B16 and BGC-823 cells.
authors.affiliation: Institute of Materia Medica, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100050, China.
authors.forename: Xi-Hao
authors.initials: XH
authors.lastname: Li
authors.forename: Dian-Dian
authors.initials: DD
authors.lastname: Shen
authors.forename: Nan
authors.initials: N
authors.lastname: Li
authors.forename: Shi-Shan
authors.initials: SS
authors.lastname: Yu
mesh_terms: D000970:Antineoplastic Agents / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D019659:Asteraceae; D018360:Crystallography, X-Ray; D006801:Humans; D020128:Inhibitory Concentration 50; D009682:Magnetic Resonance Spectroscopy; D008517:Phytotherapy; D010936:Plant Extracts / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D018517:Plant Roots; D014315:Triterpenes / Q000008:administration & dosage / Q000494:pharmacology* / Q000627:therapeutic use; D014407:Tumor Cells, Cultured / Q000187:drug effects
chemical_list: D000970:Antineoplastic Agents; D010936:Plant Extracts; D014315:Triterpenes